Detectives in the East Bay Area city of Concord are investigating an alleged kidnapping attempt involving a man dressed in a clown costume.

Concord police say a mother carrying her 1-year-old child were walking out of a Denny’s at Willow Pass Road when they were approached by a man in a clown costume. The man reportedly had no face paint and no shoes on, police said.

The man started a small conversation with the woman, police said, and at some point during that chat the man allegedly began tugging at the child’s arm.

The mother reacted by kicking the man in his shin at which point he began running away, according to police.

Police have not been able to locate the man at this point.