Oakland police in California are asking for help identifying a man seen in surveillance footage trying to kidnap a toddler and then assaulting the child’s mother.

An “unknown good Samaritan” came to the aid of the mother, prompting the assailant to flee.

The mother and the 2-year-old were at the transit bus platform at High Street and International Boulevard just after 12:30 p.m. on Thursday, Oakland police said.

They described the suspect as 40-50 years old, about 5 feet 10 inches tall and 280 pounds. He was wearing a blue hat, a red and blue shirt, and black pants.

They ask anyone with information to contact the OPD Special Victims Unit at (510) 238-3641 or the TIP LINE at (510) 238-7950.

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[Featured image: Oakland Police Department]