Beijing ? A strong magnitude 6.5 earthquake struck remote northwestern China today, the U.S. Geological Survey said. There were no immediate reports of casualties.

The quake struck the Qinghai province at a depth of 6.2 miles this morning, the agency said. The USGS said the quake’s epicenter was located 1,120 miles west of Beijing.

China’s Earthquake Administration confirmed the earthquake, but said it had a magnitude of 6.3 on its scale.

The USGS said the quake’s epicenter was 35 miles east of Da Qaidam district, in northern Qinghai. The population of the county seat, Da Qaidam town, is about 15,000 people.

An official at the Da Qaidam administrative committee said there were no immediate reports of casualties.