According to CBS 5, construction crews have accidentally ruptured a gas line at Mission and Beale streets in downtown San Francisco. Gas is "spewing everywhere." Please stay out of the area until further notice. PG&E and the fire department are on the scene.

We'll update as soon as we know more.

Update: Shelter in place ordered for all people in the area.

Update II:: ABC 7 reports: "Howard Street between Beale and 1st Street is closed." Workers still trying to repair leak. Shelter-in-place warning still in effect.

Update III: SFGate says that "Main Street to Howard Street, Howard to Fremont Street, and Howard to Market Street" all closed for repairs.

Update VI: Muni rerouting several inbound and outbound bus lines near Mission and Main Streets. "The 14, 5, 21, 31, and 71 lines are being rerouted until further notice," reports Muni Alerts.

Update V: GAS LEAK CAPPED. Residents may return home around 10 p.m.