Updated

An earthquake in a mountainous part of southwestern China killed four people and injured at least 100 Sunday, state media said, AFP reports.

The magnitude-5.7 quake, which also toppled houses, was centered near the border of Yunnan and Sichuan provinces where many Yi ethnic minority live, the official Xinhua News Agency reported. It said the casualties occurred in Yunnan's Ninglang county and Sichuan's Yanyuan county, where many houses collapsed.

Rescue officials were sending tents, quilts and clothes to the affected area, it said.

The U.S. Geological Survey measured the quake at magnitude 5.5.

A magnitude-5.8 quake in Yunnan in March last year killed 25 people and damaged thousands of homes. The area is about 1,450 miles southwest of Beijing.

China's worst earthquake in recent years struck Sichuan province in May 2008 and registered magnitude 7.9. It left nearly 90,000 people dead or missing.

The Associated Press contributed to this report.