Sister says transit officer in California used excessive force on mentally ill suspect

Sister: Man arrested at station is mentally ill

OAKLAND, Calif. — The sister of an unruly passenger injured after being removed from a San Francisco Bay area commuter train says transit police used excessive force on the mentally ill man.

Lisa Gibson says the officer was being overly aggressive when he grabbed her 37-year-old brother Michael Gibson, who has bipolar disorder and schizophrenia.

Michael Gibson is in custody on suspicion of battery on a police officer, resisting arrest and disorderly conduct.

The Saturday incident was caught on cell phone video that was posted online.

It shows a Bay Area Rapid Transit officer pulling Gibson of San Leandro off a train in West Oakland and pushing the suspect toward a glass wall. The name of the officer has not been released.

The glass broke, causing minor injuries to both men.

BART says the matter is under investigation.