PASADENA (CBS) — A 3.2-magnitude earthquake stuck a section of San Bernardino County Thursday, according to the U.S. Geological Survey.

The temblor struck at 6:23 a.m. at a depth of 6.2 miles. The epicenter was located 6 miles north-northeast of Rancho Cucamonga, according to a U.S.G.S computer-generated report.

There were no initial reports of damage or injuries.