The man removed Hood from the vehicle and proceeded to severely beat him while bystanders joined in, WCAU reported.
Hood was unconscious and had severe injuries to his head and face, WCAU reported. He was taken to a hospital, where he was pronounced dead.
The woman and her boyfriend were questioned but have not been charged.
Investigators are waiting for a toxicology report to determine an official cause of death and if Hood had drugs in his system, WPVI reported. Police said Hood has 24 previous arrests and convictions, WCAU reported.
The children were not injured.