An 87-year-old man remained in critical condition Sunday after being brutally attacked during a robbery while taking a morning walk in Pasadena a few days earlier.
A passer-by exercising in the area of the incident found the victim lying on the ground on West Drive, north of Salvia Canyon Road, near the Rose Bowl on Friday and called 911.
The man sustained "major head trauma" and was taken to a hospital.
A pouch containing personal identification and credit cards was stolen from him, officials from the Pasadena Police Department said.
Surveillance video showed four possible suspects at a Pasadena service station attempting to use the victim's credit card shortly after the attack, officials said.
Anyone with information is asked to call the 626-744-4241.