A 3.4 magnitude earthquake struck in the Inland Empire Tuesday morning, according to the U.S. Geological Survey.
The temblor hit at 3:33 a.m. about 4 miles south-southeast of Rancho Cucamonga and 5 miles east of Ontario.
The epicenter was located near an industrial development just east of Ontario International Airport.
The depth of the quake was 4.3 miles, USGS said.
Light shaking was felt as far west as South Gate and as far south as Laguna Beach. The earthquake was also felt in Redlands to the east, according to USGS.
There were no early reports of injury or damage resulting from the quake.