D’Andre plead guilty Thursday to the crime, and as part of the deal he will testify against his cousin.
According to the criminal complaint in September, the cousins put on hockey masks and robbed Taper while he was delivering a pizza to an apartment building and shot him. They ate the pizza after the murder.
Mekael told police he had his safety on and didn't know why the gun went off. But D'Andre said his cousin shot Taper because he tried to take his mask off.
Mekael is being charged as an adult and faces armed robbery and murder charges. If convicted he could face up to 95 years in prison. D’Andre was looking at four years before the plea deal.