BEIJING, April 7 (Xinhua) -- 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 kilometers, the quake's epicenter lay in 2.4 degrees north latitude and 97.1 degrees east longitude, according to the administration.

File photo taken on April 3, 2005 shows rescuers searching for survivors after the 8.5-magnitude earthquake hit Pulau Nias on March 28, 2005, North Sumatera, Indonesia. A 7.8-magnitude earthquake hit Northern Sumatra, Indonesia at 5: 15 a.m. local Time Wednesday (2215 GMT Tuesday), the U.S. Geological Survey (USGS) said on April 6, 2010. The epicenter was located at 205 kilometers northwest of Sibolga, Sumatra, with a depth of 46 kilometers, said the USGS.