At least one civilian and one firefighter were injured after a San Francisco home exploded and caught fire Thursday morning, blowing out nearby windows and rattling residents of a quiet neighborhood.

The cause of the explosion and fire are under investigation, said Capt. Jonathan Baxter of the San Francisco Fire Department in a statement. The explosion was reported around 9:20 a.m. and the fire was extinguished before noon, he said. There is no threat to the public, he said.

A person was found outside the house with serious injuries and was taken to a hospital. It's unclear if that person was a visitor or resident. Authorities are also trying to find another occupant of the home who is unaccounted for, said Baxter.

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The firefighter was also taken to a hospital but for minor injuries.

House explosion in San Francisco

Firefighters battle a house fire after an explosion in the Sunset District on Feb. 9, 2023, in San Francisco, California. The explosion injured a firefighter and a civilian. (Liu Guanguan/China News Service/VCG via Getty Images)

Images from the fire department and aerial footage show the house completely collapsed on itself.

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San Francisco Fire Chief Jeanine Nicholson told San Francisco's ABC affiliate KGO-TV that the explosion lifted the house off its foundation. She said it destroyed the house on one side and damaged the house on the other.

Pacific Gas & Electric crews have not found any gas leaks, said Jason M. King, utility spokesperson, in an email.

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King said crews also found no indications of a gas leak when the company conducted a leak survey of the property in October.