A preliminary autopsy report showed the cause of death for Marlon Maurice Davis, 45, was due to blunt force trauma to the head.
Davis was found beaten Sunday around 9:00 p.m. outside his home on 35th Avenue.
Davis' girlfriend, Bobby Chapman, 39, and her son, Eric McDowell, 17, have been charged in the death.
Investigators say a number of sticks were found at the murder scene. More arrests are possible.