A patron was stabbed at the BART Station in Concord about 7:15pm Monday.
The unidentified victim was sent to a local hospital with unspecified wounds but is expected to survive and is currently listed in stable condition. An investigation into what sparked the confrontation is underway. A BART spokesman said a 70-year-old Castro Valley man was arrested on suspicion of assault with a deadly weapon shortly after the stabbing.
A knife believed to have been used in the alleged assault was also reportedly recovered near the scene.