Cops who shot 12-year-old Tamir Rice dead while he was holding a BB gun 'did not give him first aid' and watched him lie in agony before he died just hours laterÂ Officials said that it took four minutes for Rice to receive medical attention A spokesman for the mayors office said Loehmann and his colleague Frank Gramback, who was with him, are under investigationÂ Rice's family said he would be alive had Loehmann not acted so quicklyÂ By Wills Robinson and Lydia Warren for MailOnline and Associated Press The police officers who shot 12-year-old Tamir Rice while he was holding a BB gun did not give him first aid and watched him lie in agony for four minutes, Cleveland authorities have revealed. Footage shows rookie Timothy Loehmann shooting the youngster within two seconds of his squad car arriving at the scene last weekend following a 911 call that said the weapon was 'probably fake'. However the video does not show how him and his colleague Frank Gramback reacted.Â ABC 5 have reported that the boy did not receive medical attention until four minutes after the shooting in the Ohio city, with two other officials coming to the scene to give the boy help.Â Scroll down for videos Â Evidence: This still image taken from a surveillance video played at a news conference held by Cleveland Police, Wednesday shows Cleveland police officers arriving at Cudell Park on a report of a man with a gun Surveillance footage shows 12-year-old Tamir raising and pointing his replica gun as he walks through a park in Cleveland, Ohio on Saturday. A detective and FBI agent who were in the area responded to the call for help and began giving medical help to Rice three minutes and 49 seconds after he was hit, Deputy Chief Ed Tomba said.Â Dan Williams, a spokesman for Mayor Frank Jackson, said all of the officers' actions are under investigation. Two of the officers are on administrative leave.Â He added that he was unsure of the regulations when it comes to giving medical help to a police shooting victim.Â Tamir's family said in a statement released by their attorneys that they hope Cleveland police and Cuyahoga County prosecutors 'thoroughly examine' what happened at the park that day. 'It is our belief that this situation could have been avoided and that Tamir should still be here with us,' said the family. 'The video shows one thing distinctly: the police officers reacted quickly.'Â On Saturday, a person had called 911 about a male pointing a gun at others at the park. The caller told the 911 dispatcher that the gun was 'probably fake,' then added, 'I don't know if it's real or not.' Newly-released audio showed that the dispatcher did not pass on this concern to the responding officers The patrol officer who shot Tamir was identified Wednesday as Timothy Loehmann, a 26-year-old rookie who has been on the force in Cleveland for just a little over eight months. He previously spent five months in 2012 with a department in suburban Independence, but four of those months were in that city's police academy. Loehmann's partner that day was identified as Frank Garmback, 46. He has been with the department since 2008. Both are on paid administrative leave pending a decision by the Cuyahoga County prosecutor's office whether to pursue any criminal charges. Much of the video footage shows Tamir wandering alone in a park on an unseasonably warm November afternoon. He is seen pacing, occasionally extending his right arm with what appears to be a gun in his hand, talking on a cellphone and sitting at a picnic table with his head resting on his arms. The black gun in his hands was a fake. It can be bought at sporting goods stores for less than $20. Tamir's was lacking the orange safety indicator usually found on the barrel and, from a distance, was indistinguishable from a real firearm. 'The guy keeps pulling it out of his pants and pointing it at people,' the 911 caller told the dispatcher, adding that it was 'scaring the s***' out of him. 'I don't know if it's real or not,' he added Shooting: On Sunday, Tamir's father, Gregory Henderson, said the youngster had his whole life ahead of him when he was gunned down outside Cudell Recreation Center. Heartbroken: Pictured here is Sam Rice, Tamir's mother. A lawyer representing her family said Tamir would have been alive today had the officer not opened fire so quickly Hands up: Police say the 12-year-old, pictured here with his mother, Sam, and a sibling, failed to comply with the officer's order to raise his hands At one moment, Tamir is sitting at a picnic table in a gazebo. He stands and a police car zooms into the frame from the right and stops on the grass, just a few feet from Tamir. The passenger door swings open and Loehmann opens fire on Tamir before Garmback can get out the driver's side door. While the car was was pulling up, Loehmann yelled through his open door three times, telling the boy to raise his hands, but Rice did not follow the order, Deputy Chief Tomba said. It's unclear how far the boy was from Loehmann when the officer shot him, but Deputy Chief Ed Tomba said Wednesday that it was less than 10 feet. The low-resolution video shows Tamir - who the cops thought was about 20 years old - reaching to his waistband and then bending over after being shot. His body is mostly obscured by the patrol car when he falls to the ground.Â Mrs Rice took to Facebook after learning of her son's shooting at the hands of a Cleveland police officer Grateful: Mrs Rice tanks her supporters for their prayers that have been sustaining her and her family Officer Garmback can be seen walking around the car and kicking what is said to be the airsoft gun away from Tamir. Tomba told reporters at a news conference Wednesday that an FBI agent who was working a bank robbery detail nearby arrived within a few minutes and administered first aid to Tamir. Paramedics arrived three minutes later. The boy succumbed to his injuries Sunday at a Cleveland hospital. Tomba said the city was releasing the video at the behest of Tamir's family. This is not an effort to exonerate. It's not an effort to show the public that anybody did anything wrong,' Tomba said. This is an obvious tragic event where a young member of our community lost their life. We've got two officers that were out there protecting the public that just had to, you know, do something that nobody wants to do.' Tomba would not discuss statements the two officers gave after the shooting, saying they were part of the investigation. Nor would he discuss details of the radio conversation between the officers and a dispatcher except to say they were apprised that they were on a 'gun run.' David Malik, one of the attorneys representing Tamir's family, said Wednesday that he hoped the shooting of Tamir would lead to reform. He cited Cincinnati, where he said the police department, police union and the community worked collaboratively. 'Hopefully, incidents like this won't occur again,' Malik said. Tomba said that Officer Loehmann, who only joined the team March 8, was on his shift with Garmback, a certified training field officer. Cleveland Deputy Chief of Police Edward Tomba narrates the 911 call audio and surveillance video on November 25 Cleveland Police Chief Calvin Williams said he spoke to Loehmann and said he 'is broken up about this'Â Devastated: Family members of Tamir Rice embrace after final prayers during a rally November 24 at Cudell Commons Park in Cleveland He later gained a BA in Criminology/Sociology from Cleveland State University and went on to attend the Cleveland Heights Police Academy. He was sworn in as a full-time police officer in Independence, Ohio, by the city's mayor Mark Buehner, in July 2012, and started as a city police officer in Ohio in March 2014.