An earthquake measuring 7.8 on the Richter scale hit Northern Sumatra, Indonesia, at 6:15 a.m. Wednesday (Beijing Time), according to the China Earthquake Administration.

With a depth of about 33 km, the quake's epicenter lay in 2.4 degrees north latitude and 97.1 degrees east longitude, according to the administration.

The quake was felt at nearby provinces of Northern Sumatra.

Four aftershocks with moderate magnitudes occurred.

The United States Geological Survey reported the earthquake at a magnitude of 7.8.

(Xinhua News Agency April 7, 2010)