The death toll from a mountain collapse Tuesday morning in southwest China's Sichuan Province has risen to 17, local authorities told Xinhua at around 10:30 a.m..

Six people are still missing after the collapse that occurred at around 1:25 a.m. which crushed work sheds at a construction site in Pengta Town, Kangding County, Ganzi Tibetan Autonomous Prefecture, according to the prefecture's public emergency command center.

Seven were injured in the accident, among whom three were severely wounded

Rescue work is underway.

Local authorities are still investigating the cause of the collapse.