SAN FRANCISCO (CBS SF) — At least two fires in underground vaults were quickly extinguished Wednesday afternoon in San Francisco’s Financial District, fire and PG&E officials said.

Firefighters responded at 2:23 p.m. to reports of smoke and flames coming from underneath a maintenance hole cover at 505 Montgomery St., a fire official said.

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The force of the explosion popped a manhole cover,

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“It was bouncing around. It flew up a couple of feet and went down,” said SFFD Batallion Chief Marty Ross.

Smoke rising from a second manhole a few blocks away at Montgomery and Front forced closures for another investigation.

PG&E spokesman Joe Molica said no outages have been reported in the area.

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