An earthquake measuring 5.0 on the Richter scale jolted the Kirgiz Autonomous Prefecture of Kizilsu in northwest China's Xinjiang Uygur Autonomous Region at 9:40 p.m. Friday (Beijing Time). The epicenter, with a depth of 10 km, was monitored at about 39.7 degrees north latitude and 74.3 degrees east longitude, Xinhua quoted the China Earthquake Networks Center as saying in a statement.