Residents in San Francisco's North Beach district had a rude awakening early Tuesday when a hillside gave way sending rocks, boulders and dirt crashing down on several buildings.
As many as 150 people were forced from their homes by the landslide, which hit around 3:30 a.m. No injuries were reported.
"I thought it was an earthquake," said resident Steve Liu. "It turned out to be a huge landslide."
Seven buildings -- including two apartment buildings and a condominium building -- were red-tagged, preventing occupants from going back inside, according to Mohammed Nuru, deputy director in the public works department. Several other buildings were yellow-tagged, allowing only limited access, he said.
The Red Cross set up a temporary shelter for evacuated residents.
Officials said the hillside may have given way after being "super saturated" with rain. More than one inch of rain fell on the city on Monday and more rain was forecast this week.
The landslide left a pile of mud and rocks piled about 30 feet high. Part of the hillside had previously been shored up. Traffic was shut down on one thoroughfare for several hours but was later reopened.
Engineers were studying the scene to determine how to stabilize the hillside.
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