Raleigh, N.C. — Police on Wednesday released surveillance photos of a group of men wanted in connection with an attack last month of a man outside a downtown Raleigh restaurant.

Josh Mosley, and a female friend were in front of La Volta Restaurant, at 411 Fayetteville St., around 2:30 a.m. on Nov. 24, when several men attacked him as he tried to intervene after one of the men grabbed his friend's wallet from her purse. Slideshow     Fayetteville Street surveillance photos

Mosley remembers nothing about the attack, but his friend, Mia Longo, said he was put in a headlock, hit in the head and kicked by the men. Mosely said the assault left him with bruises and memory loss.

Investigators said Wednesday that they are looking for five men – described as neatly dressed in a "preppy" fashion – who were captured on surveillance video around the time of the assault.

Longo said nothing about them made her think that they would be a threat.

"I wouldn't peg them to be doing something like this," she said.

In one of the photos, one of the unidentified men is shoving another. None of the photos shows the assault taking place.

Raleigh police are asking anyone who recognizes the men in the photos or who might have seen them elsewhere around the time of the assault to contact Raleigh Crime Stoppers on its website or by calling 919-834-4357.

"I hope somebody knows them and comes forward," Mosley said.