One man was sent to hospital early Sunday morning after he was attacked by up to 20 young men in Dartmouth.
The confrontation happened on Victoria Road, around 12:35 a.m.
Halifax Regional Police say the injured man was out with four other people when they were punched and kicked by the larger group.
The attackers stole a backpack, which was later found by the K-9 unit.
Police believe this was a random attack. No arrests have been made.
Police describe the attackers as a group of 15-20 black men in their late teens or early twenties.
The victim may have a concussion. The other victims had minor injuries.