WALNUT CREEK (CBS SF) — A man was shot just outside the Walnut Creek BART station Monday evening and police were looking for the gunman.

Police investigate the scene of a shooting near the Walnut Creek BART Station (CBS)

The shooting reportedly happened around 6 p.m. Monday evening. Walnut Creek police said a man was walking from the BART station on Riviera Dr. when he was gunned down by an unknown assailant.

The victim was taken to John Muir Hospital with a chest wound. His condition was not immediately known.

Police closed off the area around Parkside Drive and Riviera Avenue for hours during the investigation.

KPIX reached out to Walnut Creek PD, but they didn’t send official comments on Monday evening.