Mexico City's top prosecutor says the men who beat Malcolm Shabazz to death not only punched and kick him but also used a bat or stick during the attack.

Prosecutor Rodolfo Rios said Tuesday that the two waiters arrested in the case had served the grandson of civil rights activist Malcolm X and a friend at the Palace bar near Plaza Garibaldi.

Rios says the attackers realized the severity of the beating when an ambulance arrived. He says the employees ripped out all security cameras inside the bar and immediately closed it.

Rios adds that the bar's owner has yet to talk to authorities and says he is considering issuing an arrest warrant. Rios says the owner could be charged with covering up a crime.