The man, identified as 25-year-old Reuben Gerard Stack, was found dead in his home adjacent to East Fremantle Oval by his older brother on Thursday evening, leading to a murder investigation.
�His dad and his brothers are devastated,� Detective Senior Sergeant Tom Mills said.
He said the dead man had severe injuries, but he would not comment on the nature of the injuries.
Family members called St John Ambulance to the house, which the dead man shared with his father, on Thursday evening.
Sgt Mills said there was no information about whether a car could be linked to the death.
Forensic officers continued combing the street and nearby parks on Friday.
Anyone with information is asked to call Crime Stoppers on 1800 333 000.