BEIJING --  An earthquake measuring 4.0 on the Richter Scale jolted south China's Guangxi Zhuang Autonomous Region on Tuesday morning, cracking the walls of dozens of houses, but no casualties have been reported so far.

The quake hit Tian'e County of Hechi City in northwestern Guangxi at 11:24 am, according to the China Seismological Monitoring Network.

The epicenter, located at 25.1 degrees north latitude and 107.1 degrees east longitude, was about 10 kilometers from Tian'e County and 80 kilometers from Hechi.

Long Anming, deputy director of the region's seismological bureau, said they had registered 11 aftershocks. The bureau has sent its staff to the quake-hit areas to record the damage, he said.

In June, a powerful earthquake in Yunnan measuring 6.4 on the Richter scale, the most serious in the province since 2001, killed three people, injured nearly 300 and left 186,000 homeless.