A MAN was hit with a metal pole by a gang of robbers targeting car keys outside a suburban Melbourne gym early this morning.

Police are hunting four men, described as of African appearance, following the attack in Glenroy.

Following the assault, a female witness was forced to flee and lock herself in her car as she was afraid the group would turn on her.

media_camera The bashing took place outside this Glenroy gym. Picture: Nicole Garmston

Leading Senior Constable Lee Thomson said the victim was approached by the men on Pascoe Vale Rd just before 5.30am.

“Police have been told the males then used a metal pole to strike the man on the head, causing him to drop his backpack,” Sen-Constable Thomson said.

“The males then allegedly took items from the backpack, including car keys, and approached the victims’ car.

“Once going through the vehicle, the males began to leave.”

A woman exited a nearby gym and came across the hurt victim.

“Upon seeing him she also saw one of the males, who then turned and came towards her,” Sen-Constable Thomson said.

“She has told police she ran to her car, locked the doors and left the area before calling triple-0.

“The males then left the scene.”

Police are probing the scene.

Anyone with information is urged to contact Crime Stoppers on 1800 333 000.