(KRON) -- A 2.5-magnitude earthquake shook the East Bay overnight Monday, according to the U.S. Geological Survey. The epicenter was in Concord near Mount Diablo High School. The quake occurred at 1:23 a.m. on the Concord-Green Valley Fault, USGS said. People reported feeling the shaking near Conco rd, Martinez, Pleasant Hill and Lafayette, according to USGS’s “Did You Feel It?” survey. On Sunday evening, a 2.6-magnitude earthquake rumbled near Berkeley. There were no initial reports of damage. ...read more read less