Authorities are looking for a man who posted a series of messages on Twitter, threatening to shoot students and place pipe bombs inside Orange County schools. 
 
 The FBI, Orlando Police Department and Orange County Sheriff's Office are investigating the threats, but don't believe they are credible. 
 
 Deputies are looking for 23-year-old Jesus Henry Kong, also known as Jessie Eloah Calix and Jesus Matute. Officials say he has a "history of law enforcement encounters" and is a transient who has lived in Florida, California, Virginia and Maryland. 
 
 "Every investigative lead is being aggressively followed in order to identify and locate the subject making the threats," said FBI Special Agent Amy Pittman. "Although the FBI does not believe that the threat is credible, as the subject does not reside in Florida, we will continue to work with local partners to locate the subject." 
 
 The threats started on July 24 and have targeted William R. Boone High School, Edgewater High School, Colonial High School, Colonial Ninth Grade Center and Liberty Middle School, the Sheriff's Office said. 
 
 CAPTION Announcing the solving of the Christine Franke cold case from 2001, Orlando Police chief Orlando Rolón, Orlando mayor Buddy Dyer, detectives and family members gather for a press conference at Orlando Police headquarters, Monday, Nov. 5, 2018. (Joe Burbank/Orlando Sentinel) Announcing the solving of the Christine Franke cold case from 2001, Orlando Police chief Orlando Rolón, Orlando mayor Buddy Dyer, detectives and family members gather for a press conference at Orlando Police headquarters, Monday, Nov. 5, 2018. (Joe Burbank/Orlando Sentinel) CAPTION Announcing the solving of the Christine Franke cold case from 2001, Orlando Police chief Orlando Rolón, Orlando mayor Buddy Dyer, detectives and family members gather for a press conference at Orlando Police headquarters, Monday, Nov. 5, 2018. (Joe Burbank/Orlando Sentinel) Announcing the solving of the Christine Franke cold case from 2001, Orlando Police chief Orlando Rolón, Orlando mayor Buddy Dyer, detectives and family members gather for a press conference at Orlando Police headquarters, Monday, Nov. 5, 2018. (Joe Burbank/Orlando Sentinel) CAPTION The discovery caused enough concern for the FBI and Alcohol, Tobacco, Firearms and Explosives to respond to the home in Lake Helen. The discovery caused enough concern for the FBI and Alcohol, Tobacco, Firearms and Explosives to respond to the home in Lake Helen. CAPTION A mother and her teenage son were found dead inside their Azalea Park home in east Orange County, deputies said. (Video from Fox 35 Orlando) A mother and her teenage son were found dead inside their Azalea Park home in east Orange County, deputies said. (Video from Fox 35 Orlando) CAPTION Increase in Orlando Police Department's use of force. Increase in Orlando Police Department's use of force. CAPTION A threatening message was found on a bathroom wall at Umatilla High School, authorities said. (Video from Fox 35 Orlando) A threatening message was found on a bathroom wall at Umatilla High School, authorities said. (Video from Fox 35 Orlando) 
 
 The posts included messages encouraging people to shoot up the schools and his plans to place pipe bombs inside two different schools, deputies said. 
 
 "I want to shoot a few (kids) at Liberty Middle School. I dislike homosexuals ... " one post said. 
 
 Orange County Public Schools sent messages to parents of students at the schools, alerting them to the threats. 
 
 Boone High School Principal Dusty Johns put out a call to parents, letting them know the school is working closely with authorities to thoroughly investigate the "social media concern." 
 
 Students were not evacuated and classes should not be affected, an Orange County Public Schools spokeswoman said. 
 
 cdoornbos@orlandosentinel.com; chayes@orlandosentinel.com ||||| More than 900 students were absent Thursday at three Orange County schools that were named in social media threats -- including nearly a third of the student body at one campus. 
 
 Parents at four Orange schools recorded phone messages on Wednesday saying the district was working with law enforcement agencies to investigate a "social media concern" after a man posted a series of messages on Twitter, threatening to shoot students and place pipe bombs inside campuses. 
 
 The FBI, Orlando Police Department and Orange County Sheriff's Office said Wednesday they were looking into the threats, but didn't think they are credible. 
 
 But large numbers of students stayed home Thursday, the fourth day of class for Orange students, from at least three of the four schools named. At Liberty Middle School in southeast Orange, 379 of the 1,186 students enrolled missed Thursday. By comparison, 18 Liberty students missed the fourth day of school in 2015. 
 
 At Boone High School in Orlando, 357 of the 2,845 students enrolled did not attend class on Thursday, compared with 64 on the same day last year. And at College Park's Edgewater High School, 174 students out of 2,092 were absent, up from 46 in 2015. 
 
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 Thursday's attendance numbers for east Orlando's Colonial High School, the fourth school named in the threats, are not yet available. 
 
 Law enforcement officials are now looking for the man who posted the threats, 23-year-old Jesus Henry Kong, a transient who has lived in Florida, California, Virginia and Maryland. He is also known as Jessie Eloah Calix and Jesus Matute and officials say he has a "history of law enforcement encounters." 
 
 The posts included messages encouraging people to shoot up the schools and his plans to place pipe bombs inside two different schools. 
 
 "I want to shoot a few (kids) at Liberty Middle School. I dislike homosexuals ... " one post said. ||||| ORLANDO, Fla. (AP) — More than 900 students were absent from three Orlando-area schools after authorities say a man posted messages on Twitter, threatening to shoot students and put pipe bombs inside campuses. 
 
 News outlets reported that on Thursday there were 379 absences at Orange's Liberty Middle School, 357 at Orlando's Boone High School and 174 absences at Orlando's Edgewater High School. It is unclear how many students were missing from Orlando's Colonial High School, the fourth school named in the threats. 
 
 The FBI said Wednesday they were looking into the threats made against the schools, but didn't think they are credible. 
 
 Authorities are searching for the man who they say posted the threats: a 23-year-old transient who has lived in Florida, California, Virginia and Maryland.
– More than 900 students were absent from Orlando-area schools on Thursday after authorities say a man on Twitter threatened to shoot students and put pipe bombs inside campuses, per the AP. There were reportedly 379 absences at Orange's Liberty Middle School, 357 at Orlando's Boone High School, 174 at Orlando's Edgewater High School, and an undisclosed number at Orlando's Colonial High School. The FBI said Wednesday it was looking into the threats, but didn't think they were credible. Authorities are searching for a 23-year-old transient named Jesus Henry Kong (aka Jessie Eloah Calix and Jesus Matute) they say is responsible. "Although the FBI does not believe that the threat is credible, as the subject does not reside in Florida, we will continue to work with local partners to locate the subject," said an FBI special agent on Wednesday, per the Orlando Sentinel. Kong has lived in Florida, California, Virginia, and Maryland.