The European Mediterranean Seismological Centre (EMSC) had pegged the earthquake at a magnitude 6.1 in the region.

The quake was at a depth of 35 km (21.75 miles) with its epicenter located 102 km west-southwest of Lanzhou, China, EMSC said.

China's national commission for disaster prevention, reduction and relief and Ministry of Emergency Management have activated a level-IV disaster relief emergency, Xinhua reported.

A work team has been dispatched to the affected areas to assess the impact of the disaster and to provide guidance for local relief operations, the report added.

(Reporting by Baranjot Kaur and Anirudh Saligrama in Bengaluru; editing by Christina Fincher, Chizu Nomiyama and Jonathan Oatis)