TAMPA — One day after another unsolved fatal shooting in Seminole Heights, Tampa Police Chief Brian Dugan said Wednesday it doesn’t matter whether the murders are the work of a serial killer or several different people. 
 
 "We have four families devastated," Dugan said at a news conference. "Beyond the families we have their friends devastated and have a police department that’s been tilted and have a community that is very intense and rightfully so. And so it really doesn’t matter at this point how we label it, whether it is one individual or two. We need this to stop." 
 
 But as he has said previously, Dugan remains convinced the unsolved homicides are all connected. 
 
 "It’s the time, the methodology, the fact that they were all alone,’’ he said. "There is no motive. Nothing is taken or anything like that." 
 
 The killings began Oct. 9 with the shooting of Benjamin Mitchell, 22. Two days later, Monica Hoffa was shot dead and her body found two days later. On Oct. 19, Anthony Naiboa, 20 was gunned down. And early Tuesday morning Ronald Felton, 60, was shot dead. 
 
 In an effort to draw out more tips, Dugan released a new video showing a person he is now identifying as a suspect in at least two of the Seminole Heights killings. 
 
 "We have very limited evidence," Dugan said. "That is why we are doing this appeal — to have someone tell us who is in that video. They could be perfectly innocent, but I don’t think so." 
 
 Dugan said the video was taken moments before Felton’s murder early Tuesday. The chief said he believes someone must recognize the person. 
 
 "I don’t need speculation. I don’t need profiles," Dugan said. "We need names. 
 
 Dugan noted the gait and manner in which the suspect walked, saying it was similar to a person captured in video Oct. 9, the day Mitchell was killed. He was described as a black male, about 6 feet to 6-foot-2 with a thin build and light complexion. 
 
 The chief seized on the casual manner in which the person in both videos appears to be walking. The Oct. 9 video showed him looking at and flipping his phone shortly before the shooting. 
 
 "It’s clear to me that this person is able to flip a switch and murder someone," Dugan said. 
 
 Meanwhile, the reward has gone up to $91,000, with the Federal Bureau of Investigation offering $50,000. 
 
 Dugan refused again to offer any specifics about the type of weapon or ammunition used in the crimes. He said police have continued to maintain a strong presence in the neighborhood. 
 
 So far, he said, they have knocked on 1,957 doors. 
 
 "We are out there for the long haul," he said. 
 
 Responding to a question about Naiboa’s family searching for their son’s killer and thinking they have found a suspect, Dugan said he feels for Casimar Naiboa. 
 
 "I won’t question a grieving father and how he goes about this,’’ the chief said. "I will question the people around him who might be misleading him. And I can assure him we are following up on every lead we have." 
 
 Dugan said the thought of another killing has him worried. 
 
 "I don’t sleep at night," he said. "How could I. That’s where we stand. I feel for this neighborhood, the people who live there and the businesses." 
 
 Contact Howard Altman at [email protected] or (813) 225-3112. Follow @haltman. ||||| Police are now searching for a possible suspect in a string of shooting deaths in Tampa's Seminole Heights neighborhood after video emerged from just before the latest killing. 
 
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 Four people have been shot and killed in Seminole Heights in just six weeks, according to police. After the first killing, the Oct. 9 shooting of 22-year-old Benjamin Mitchell, police released surveillance video of an individual repeatedly flipping and staring at a cellphone shortly after Mitchell was killed, labeling the subject as a person of interest. 
 
 Tampa Police Department 
 
 Police are now considering that individual a suspect after video taken before the killing of 60-year-old Robert Felton on Tuesday morning appears to show the same person, interim Tampa Police Chief Brian Dugan said at a press conference Wednesday afternoon. 
 
 The person in the video, taken at 4:51 a.m. Tuesday, "moments before" Felton was killed, appears to have the same gait and manner of dress as the individual in the earlier video, Dugan said. After Felton was shot, witnesses described the suspect as a black man with a tall, thin build and dressed in all black clothing, Dugan said. 
 
 Tampa Police Department 
 
 He said the person of interest was "nonchalantly walking" in both videos, saying the individual may be "able to flip a switch and go out and murder someone," based on the person's casual manner. 
 
 "Look how they're looking at their phone," Dugan said, adding that the individual could be "able to put that away, hit a switch and go out and gun someone down." 
 
 Watch this video. Pay attention to the walk. Pay attention to the way he flips his phone. If you recognize this suspect in the Seminole Heights murders contact @crimestopperstb Reward up to $91Khttps://t.co/gZ3ykC7Vif — TampaPD (@TampaPD) November 15, 2017 
 
 Police are not calling the suspect a serial killer because they can't determine whether the same person committed all the murders, Dugan said, adding that authorities are "pretty convinced" that the suspect was involved in at least Mitchell's and Felton's. 
 
 "Someone has to know who this individual is," he said, citing the suspect's "unique walk" and "unique posture." 
 
 Jones, Octavio/Tampa Bay Times via AP 
 
 The suspect is striking "under the cover of darkness" against people who are alone and "probably preoccupied," Dugan said. A motive is not yet known. 
 
 Felton was supposed to meet up with someone Tuesday when someone came from behind and shot him as he was crossing the street, Dugan said after the killing. Police responded to the scene within minutes and formed a perimeter eight blocks wide, but the suspect fled northeast from the area, Dugan said. 
 
 Courtesy James Felton 
 
 Investigators have received more than 450 tips since Felton's death on Tuesday and 2,300 tips in all, Dugan said. A reward for information leading to an arrest has increased to $91,000 he said. 
 
 "Let's hope this motivates somebody with the strength and fortitude to step forward," he said, emphasizing that investigators need names rather than profiles or speculation in order to more easily eliminate possible suspects. 
 
 The first three victims were killed within 11 days in October. After Mitchell was killed on Oct. 9, the body of 32-year-old Monica Hoffa was found on Oct. 13, just half a mile from where Mitchell was killed, police said. Anthony Naiboa, 20, a man Dugan described as having "mild autism," was killed on Oct. 19 after taking the wrong bus home from work. 
 
 If you're reading this and have info about the #SeminoleHeights murders we're pleading with you to contact @crimestopperstb pic.twitter.com/CGneg1Md2p — TampaPD (@TampaPD) October 31, 2017 
 
 Dugan said he believes the community has rallied together and "given a strong message to whoever is doing this," citing the weekslong gap between Naiboa's and Felton's deaths. Dugan encouraged Seminole Heights residents to continue to keep their porch lights on between 6 p.m. and 6 a.m. and to "stick together" when they are outside. 
 
 ABC News 
 
 Dugan has been experiencing a "tremendous amount of anxiety" since the killings began, he said. 
 
 "I don't sleep at night. How could I?" he said. ||||| TAMPA — A 60-year-old man was shot and killed before dawn Tuesday morning in Seminole Heights, the fourth victim in a series of killings that started in the neighborhood last month, Tampa police said. 
 
 The victim was identified as Ronald Felton, 60, of Tampa, an unemployed construction worker who volunteered Tuesdays and Fridays at a food bank near the shooting scene. 
 
 Police Chief Brian Dugan said police received reports of shots fired at 4:51 a.m. near Nebraska Avenue and E McBerry Street. 
 
 Investigators believe the shooting is connected to the three previous slayings in Southeast Seminole Heights. 
 
 "It’s very unfortunate here that we’ve had another one," Dugan said during a news conference at the shooting scene. 
 
 Felton was crossing the street to meet someone when the shooter came up behind him, police said. 
 
 "This has got to stop," Mayor Bob Buckhorn said at the news conference. "We will hunt this person down until we find them." 
 
 Police described the suspect in a news release as a black male, 6-foot to 6-foot-2, with a thin build and light complexion and armed with a large black pistol. He was last seen wearing all black clothing. At the news conference, police said he was wearing a baseball cap. 
 
 RELATED: Sister warned latest shooting victim to be careful traveling Seminole Heights 
 
 Robert Clark, who was doing laundry at a laundromat near the shooting scene, told the Tampa Bay Times he heard the gunfire, turned and saw a man running east. 
 
 "I’m getting ready to put another 75 cents in the machine when I hear a ‘Boom, boom,’" Clark said. "Five of them. I see a man lying in that street and another running to that road. 
 
 "When I got to the man, he was laid out bad." 
 
 Elton Sheppard, 73, who lives near the food bank, was getting ready to go to the laundromat, too, when he heard five shots. He estimated that police arrived five to 10 minutes afterward. 
 
 Signs at the laundromat say it has video recorders. Melissa Deming, who owns property in neighborhood, said she and others there have been asked to turn over any video they have to police. 
 
 Officers found Felton’s body in the road along N Nebraska Avenue, north of E Caracas Street. 
 
 Police believe the shooter lives in the neighborhood and are asking residents to stay indoors until they clear the scene. 
 
 RELATED: Arrests spike as police blanket Seminole Heights in wake of three killings 
 
 The suspect "hasn’t gone very far, and we’re talking to as many people as we can to see what they may have seen," said police spokesman Steve Hegarty. 
 
 Police and were going door to door Tuesday morning along a perimeter stretching from Osborne Avenue north to Hillsborough Avenue, and Nebraska Avenue east to 15th Street. Just before 10 a.m., they brought in a dog to help with the search near Nebraska and McBerry Street. 
 
 They were asking people where they were at the time of the Tuesday shooting and the other shootings, stopping longer and taking mobile phone photos at some addresses. 
 
 Some people who were trying to leave the area or return were asked to wait. 
 
 Lori Skiles, 51, had to leave for work at 11:30 a.m. and was allowed out. 
 
 "I’m just not allowed back in until they are done," Skiles said. 
 
 The first killing was Oct. 9, when 22-year-old Benjamin Mitchell was shot at a bus stop. Monica Hoffa, 32, was found dead Oct. 13 in an empty lot less than half a mile away. Police heard a gunshot Oct. 19 and found the body of Anthony Naiboa, 20, a few blocks from the first killing. 
 
 Friends and relatives of Felton’s gathered near the scene of the shooting once word spread that he was the victim. 
 
 Cynthia Murray, 68, said Felton was living with her at her home near the corner of Florida Avenue and Emma Street. He had been homeless and Murray took him in "some time ago," she said. 
 
 He worked much of his life in construction in Tampa but was not working lately, volunteering Tuesdays and Fridays with a food bank at the New Season Apostolic Ministries, Murray said. The ministry is at the intersection where the body was found, Nebraska and Caracas. 
 
 Felton would show up to help with the food bank at 2:30 a.m., she said. 
 
 "They do good work there for those who need it," said neighbor Sheppard. "They’re all real good people. I’ve been on this block a long time and I’ve never seen anything like this. When the sun is down I’m inside and that’s not right." 
 
 The line of people seeking food stretches down Caracas once serving begins, neighbors said. 
 
 A native of New York, Felton had a twin brother, Reggie, Murray said. 
 
 "Anybody who knows Tampa knows the twins and they know if you ask (Ronnie) for help he would do whatever you wanted," she said. "He didn’t need to come here every week but he loved it." 
 
 Felton was looking forward to helping at the food bank Tuesday because his brother Reggie was off work and planned to join him, Murray said. 
 
 RELATED: Mural is unveiled to honor shooting victims killed in Seminole Heights 
 
 "He hadn’t seen his brother much lately -— his twin," she said. "He was so excited to spend time with his brother today." 
 
 Murray said she believes Felton may have known the killer because witnesses reported he crossed the street to speak with him. She said police told her Felton was on his mobile phone with his brother Reggie at the time of the shooting so she hopes he said a name before he died. 
 
 Cassandra Davis, 29, said the Felton twins are as well known in West Tampa as they are in the Seminole Hights area. 
 
 "The neighborhoods are one big family," Davis said. "They all know the twins. They’re good people" 
 
 Linda Daniels, who said she is a cousin of Felton’s, said, "He was the sweetest person, never any problems." 
 
 For Casimar Naiboa, father of one of the three earlier shooting victims, news of another killing in Seminole Heights "is like salt in the wound" 
 
 "It brings back dark memories," said Naiboa, 50, father of Anthony Naiboa. "I still dream about my son." 
 
 As the father of a murder victim, Naiboa said he "feels bad for this victims’ family. 
 
 "When someone loses a son it is the worst feeling," he said. "I send my condolences to them." 
 
 Police have told him they hope the killer makes a mistake, Naiboa said. 
 
 "But every time he makes a mistake, someone loses their life." 
 
 This is a developing story. Stay with tampabay.com for updates. 
 
 Staff writer Howard Altman contributed to this report. Contact Paul Guzzo at pguzzo@tampabay.com.
– After nearly a month of quiet, an apparent serial killer appears to have struck again in Tampa, Fla. Police in the Seminole Heights neighborhood say a gunman fatally shot 60-year-old Ronald Felton as he crossed a street about 5am Tuesday, reports the Tampa Bay Times. Felton was killed in the same area as three other apparently random victims in separate incidents in October. "We've had another one," said Brian Dugan, chief of Tampa's police force. "We will hunt this person down until we find them," added Mayor Bob Buckhorn. Police previously released a video of a suspect, and this time they also have a description from a witness who saw him running from the scene, per WFLA: a black male about 6 feet tall, with a thin build and light complexion. He was dressed in all-black clothing and carrying a large pistol. "We think by their proximity and the manner it was done, they are linked," said Dugan. "We're saying it's related to the other Seminole Heights murders." Police think the killer lives in the Seminole Heights neighborhood and are asking residents not only to be cautious but to help identify him. Felton, an unemployed construction worker, is believed to have been on his way to a local church food bank, where he volunteered, reports NBC News. The previous victims—Benjamin Mitchell, 22, Monica Hoffa, 32, and Anthony Naiboa, 20—were shot on Oct. 9, 13, and 19, respectively. Felton was killed just blocks from a memorial to the first three victims. (The way the suspect flips a cellphone while walking may be a clue, say police.)