A strong magnitude-5.9 earthquake struck China’s Gansu province Monday at 7:45 a.m. local time (Sunday at 7:45 p.m. EDT), according to the U.S. Geological Survey. Initial estimates indicated the quake killed 11 people and injured another 81, Reuters reported, citing official state media.

The epicenter of the temblor was 6.1 miles deep and located about 8 miles east of Chabu, 94 miles west of Beidao and 766 miles west-southwest of Beijing, the USGS reported.

The China Earthquake Administration has initiated an emergency-response plan that includes the close monitoring of the tremor and its aftershocks, as well as the dispatching of disaster-relief teams to the affected areas in Minxian and Zhangxian counties, the official Xinhua News Agency said.