A 5.7-magnitude earthquake today hit China's northwestern Qinghai province, the remote region where a strong tremor killed over 2,000 people last month.
The quake jolted Yushu Tibet Autonomous Prefecture in northwest Qinghai Province at around 10.2am, state-run Xinhua news agency reported.
No casualties were reported so far.
The quake's epicenter was located at 96.3 degrees east longitude and 33.3 degrees north latitude in Longbao Town, 60km southwest of Yushu's prefecture seat Gyegu Town. But the tremor was felt strongly in Gyegu, said Xu Chuanjie, head of emergency rescue section at the provincial earthquake bureau.
The quake focus was 10km below the earth's surface.
According to Liu Jie, director of the quake forecast centre at the China Earthquake Network, the quake was an aftershock of the 7.1-magnitude earthquake that hit Yushu on April 14.
Liu said it was "normal for moderate or strong aftershocks to occur months after a major earthquake."
He added that more aftershocks in the region near Yushu can be expected in the near future.
Today's tremor was followed by three more aftershocks of moderate intensity, he said.
From April 14 to May 28, Yushu recorded 1,873 aftershocks, of which 15 were above 3 magnitude. The April 14 quake devastated Yushu and claimed more than 2,200 lives.
