Several San Francisco buildings were evacuated because of a gas leak after flooding near the Marina District, according to a fire department spokesman.
The initial flooding, due to a broken water main, closed the intersection at Fillmore and Union streets.
A shelter-in-place order is in effect with streets shut down in a one-block radius from the intersection.
A strong smell of gas was reported and PG&E is on-site searching for the origin of the odor.
The water main has since been shut off, and the streets are covered in a brown substance.
Fire department officials confirmed the brown substance is sand and not sewage.
Update, 5:50 p.m.: Shortly before 5:30 p.m., PG&E stated that the flow of gas had been stopped. Water damage affected the basement of one building, but no injuries were reported. Traffic will continue to be diverted.=
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