Police are investigating the circumstances surrounding an assault in Mooroolbark on the weekend, Victoria Police say.
Police have been told the victim, a 26-year-old Mulgrave man, stepped out of his car on Sheridan Avenue and was knocked unconscious by a group of males about 10.30pm on 14 October.
A friend, who was with the victim at the time, rendered assistance.
The victim had earlier been at a festival in St Kilda with friends.
He and another male friend gave two girls who were also at the festival a lift back to their Mooroolbark address.
As they arrived at the address, the victim stepped out of the car and was attacked by 4-5 unknown males.
It is believed the males may have been in a silver Toyota Hilux ute.
The victim’s friend drove him home before he was taken to hospital by his housemate.
He sustained a broken nose and cheekbone which will require surgery.
Police have spoken to a number of witnesses but anyone with information is urged to contact Crime Stoppers.