CONTRA COSTA COUNTY, Calif. (KGO) -- A 3.4 magnitude earthquake was reported overnight in Contra Costa County.
The quake struck around 2:30 a.m. and was centered in Pacheco, according to the United States Geological Survey.
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Some people reported they could feel it in parts of Walnut Creek and Concord.
There are no reports of damage or injuries at this time.
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3.4 magnitude earthquake strikes Contra Costa County