The city of Delingha and its neighboring areas in northern part of Qinghai province, northwest China, were hit by an earthquake measuring 5.5 on the Richter scale at 13:04 Tuesday.

So far, there have been no immediate reports of damage or injury.

The epicenter was approximately 50 kilometers from Delingha at north latitude 37.5 degrees and east longitude 96.7 degrees, according to a source with China's Seismological Network Tuesday.

Investigative teams from the China Seismological Bureau and Qinghai Provincial Seismological Bureau have rushed to the quake affected areas to look into the situation.

On April 17 2003, an earthquake measuring 6.6 on the Richter Scale struck the same city, with visible cracks on some houses in the vicinity. The city was also jolted by another two quakes on Feb. 25 and March 17 2004, respectively measuring 5.0 and 5.2 on the Richter scale.

Source: Xinhua