A 22-year-old Florida man was sitting in jail on a murder charge when cops served him warrants accusing him of another killing.
Hakeem Armani Robinson was charged this week with second-degree murder in the Feb. 25, 2019 death of 16-year-old Adrian Gainer Jr., police said.
First Coast News reported that Gainer was shot dead in an apartment complex in Jacksonville. When officers arrived, Gainer was dead from multiple gunshot wounds.
During the investigation, police found Gainer had been in a gazebo at the complex with another person when they heard gunfire. They split up and tried to flee. However, Gainer did not make it and a witness said they saw him fall to the ground as he was shot.
According to court documents, Robinson then ran up on Gainer and shot him at close range in the back of the head or neck, as Gainer was trying to shield himself. Dozens of shell casings from a rifle were found in the gazebo, as well as where Gainer ran and died.
After the shooting, police said Robinson posted several photos and videos bragging about Gainer's murder.
Robinson was originally arrested on Sept. 10 for second-degree murder in the death of 23-year-old Charles Quentin McCormick, authorities said. That homicide occurred on Jan. 15, 2020, in a shopping center in Jacksonville.
McCormick was gunned down in the parking lot by a drive-by shooting, according to police. An off-duty police officer saw the shooting and proceeded to chase the car until it crashed nearby and two men from the vehicle got away on foot, authorities said.
Police said the two men then broke into a nearby home and changed their clothes. They held the homeowner hostage until someone drove up to the house and fled with the pair, per police.
Investigators are still working this case, but two other people have been jailed. Police said they are looking for the final suspect, 26-year-old Abdul Kareem Robinson Jr.