A 5.7-magnitude aftershock jolted Yushu Tibet Autonomous Prefecture of northwestern China's Qinghai Province at about 10:29 a.m. Saturday, according to China Earthquake Networks.

The temblor was strongly felt at Gyegu Town, the prefecture seat of Yushu.

No other details were available.

A 7.1-magnitude quake struck Yushu April 14, killing more than 2,200 people.

(Xinhua News Agency May 29, 2010)