Authorities say BART and Oakland police responded just after 2:30 p.m. to 8th and Oak streets as the shooting occurred.
BART police were able to utilize surveillance video to identify a suspect and after a search of the surrounding area were able to take a suspect into custody.
The station was briefly closed but reopened for service at 3:10 p.m.
Police say there is no indication that the suspect or victim were BART riders.
Oakland police are investigating another shooting in the city that happened around the same time which turned out to be deadly. It happened around 2:30 p.m. Tuesday near Oakland International Airport where officers responded to reports of the shooting in the 9700 block of Doolittle Drive.
This story is developing. Check back for updates.