BERKELEY — Two male victims were treated at an area hospital after a weekend assault and robbery at the city’s People’s Park, UC Berkeley police said Monday.

At 11:06 a.m. Sunday, one victim was sitting in the park when a suspect hit him in the back of his head with a piece of wood. After the victim fell to the ground, the suspect took the victim’s backpack, police said.

A male passenger in a nearby car saw what happened, got out and tried to help, but a second suspect threatened the passenger. Someone else then hit the passenger in the back of his head, sending him to the ground.

A search of the area did not turn up the suspects, described as black men in their 30s around 6 feet tall and 280 pounds with heavy builds. The first suspect had a dark complexion and wore a black-and-red jacket, while the second had a medium complexion and wore a blue jacket.

Anyone with information should call UC Berkeley police at 510-642-0472 from 8 a.m. to 5 p.m. and 510-642-6760 at other times.

Contact George Kelly at 408-859-5810.