A 4.2-magnitude earthquake jolted Li County in Aba Prefecture of southwest China's Sichuan Province at 13:06 Sunday Beijing Time, the China Earthquake Networks Center said. The epicenter was monitored at 31.5 degrees north latitude and 103.3 degrees east longitude with a depth of 15 km, Xinhua quoted the center as saying. The quake was strongly felt in Li County, but no casualties or property losses have been reported so far, according to the local earthquake prevention and disaster reduction department.