The station agent reported that a male was in the station acting erratically, after the last train had passed through. The man climbed on top of the agent's break room and appeared to be trying to harm himself. The agent sought refuge on the platform until officers arrived. Power was dropped as a precaution. Officers were able to coax the man down and determined that he was in need of psychiatric care. The man was transported to County Hospital for evaluation and treatment. There were no injuries and no delay in service.