CHICO, Calif. -

A Bay Area mother said her son was sucker punched in Chico March 25 at a house party.

Heather McKinsey said her son was trying to be a good Samaritan and break up another fight before he got hit.

At a home on the 700 block of Hickory Street in Chico you can see the evidence of where the party happened. 19-year-old Austin McKinsey was there with his roommate Jonathon Hilton.

“There was a keg there and a lot of booze,” said Hilton.

Around midnight, Hilton said the party was starting to escalate and tensions were running high.

According to Hilton his friend Austin saw three women beating up another woman just a few feet away from him in the backyard.

“It was a one-on-one at first but then it turned into three-on-one,” said Hilton. “The three girls were just beating her senseless on the ground. No one was doing anything about it, so Austin simply tried to break it up.”

Hilton said three men approached McKinsey and told him to step away. The friends left the party through the side gate. Once they got to the front yard - Hilton said McKinsey was hit in the face.

“There was a huge fight started to break out. There were five guys against my friend and I,” said Hilton. “I got hit right in the side of the temple and the cheek bone. I kind of saw it coming so I somewhat absorbed it but Austin got hit right out of the blue.”

“He [Austin] sustained a fracture to his right-side eye socket,” McKinsey said. “It collapsed the bone shards into his cheeks.”

Austin had two plates surgically installed in his face Tuesday afternoon - and they will take a few weeks to heal.

“This should not happen to somebody that nice and with a kind heart,” McKinsey said. “He's such a peaceful person and this shouldn't happen to somebody like him.”

Chico Police has no leads on who these people are, but the McKinsey’s are offering a $3,000 reward for any leads.

If you have any additional information - you're asked to call Chico Police at 530-897-4911.