DANVILLE (CBS SF) — A shallow earthquake with preliminary magnitude of 2.9 struck Contra Costa County early Monday morning, according to U.S. Geological Survey officials.

Magnitude 2.9 Quake Near Mount Diablo

The quake struck at 12:49 a.m. and was located 2 kilometers northwest of the unincorporated community of Diablo, near Danville.

It had a depth of 7.3 kilometers, according to USGS officials.

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