A female was seen walking on the transfer tracks east of the platform. She exited to Hacienda Drive by using an emergency exit. She returned about an hour later, and was seen touching the electric third rail. An officer attempted to detain her, but she again fled to Hacienda Drive. The officer managed to detain the woman on the on-ramp leading to I-580. Officers determined that the woman was in need of psychiatric care and she was transported to John George Pavilion for treatment.