Officers responded to the 12th Street Station for a report of a male threatening to harm himself. Officers arrived at the station, located the male and began to evaluate him to determine if he was a threat to himself. A records check showed the male had a $25K warrant for theft held by Walnut Creek PD. The male was determined not to be a threat to himself or others and was placed under arrest for the warrant. He was also cited for fare evasion.