A person was robbed and assaulted on the BART trail across from Olivera Rd. near the N. Concord BART station in Concord just after 9pm on Sunday night.
The suspect is described as a black male juvenile, who hit the victim in the back of the head and took his shoes and cell phone. Another suspect, a Hispanic male, was also seen.
The victim received non-life-threatening injuries during the robbery.