The U.S. Geological Survey confirmed that a magnitude 4.4 earthquake struck an area southeast of of Highland Park, California on Monday.
The quake was 7.4 miles deep and struck at 12:20 p.m. PST, according to the USGS.
Media reports from around Southern California portrayed an area on heightened, if not temporary, alert for emergency responders and residents, who felt the shaking as far as the high desert area of Victorville.
The shaking had the Los Angeles Fire Department on alert, with crews at 106 fire stations doing surveys of their districts. There were no reports of injuries or structural damage, the department said when the check was complete, according to a CNN report.
Minor damage was reported in Pasadena, a few miles from the epicenter. A pipe broke at Pasadena City Hall, sending a stream of water flowing out onto the sidewalk and roughly 200 employees were evacuated from the building, ABC News reported.
The LA Times reported the quake was centered on the Puente Hills thrust fault system, the network that produced the 1987 Whittier Narrows M5.9 earthquake that caused $358 million in damage.