5.0 temblor shakes California-Mexico border

An estimated 5.0-magnitude earthquake has shaken the US-Mexico border region near San Diego. The US Geological Survey says Tuesday's quake struck at 2:41 p.m. (1941 GMT) 21 miles (33.79 kilometers) southeast of the U.S. border city of Calexico. Southeastern California and Mexican border communities have been jolted for days by a continuing earthquake swarm.