The death toll in the massive mudslide in northwest China's Gansu Province has risen to 1,144, with 600 still missing as of 4:30 p.m. Thursday, the provincial department of civil affairs said late Thursday.

The toll rose from 1,117 on Wednesday.

Overnight downpours triggered new floods and mudslides to the mudslide-devastated town of Zhouqu in Gannan Tibetan Autonomous Prefecture, leaving three people missing.

Floods also have left eight people dead and eight others missing in two counties in Gannan's neighboring city of Longnan on Thursday.