Los Angeles County Sheriff Lee Baca says the sheriff's deputy who was captured on video striking a woman on a Metro bus will be held accountable for his actions, but stopped short of saying he should be disciplined.

"If the individual deputy who swung an elbow at the lady is looking at that as a sensible solution, we need to retrain that individual," he told Ed Mertz of KNX-AM (1070) in an interview Wednesday.

In the video, a female deputy holds the woman from behind while her partner appears to deliver a sweeping blow to the left side of her face. It's unclear whether he strikes her with his fist or right forearm.

The man who recorded the video told NBC-TV Channel 4 that the woman was polite and friendly toward the other passengers as she boarded the bus. He said she started cursing at the deputies when they asked her to get off.