XI'AN - Five people were dead and another 30 injured after a passenger bus overturned in Northwest China's Shaanxi province on Thursday afternoon, local authorities said Friday.

The accident occurred around 12:40 Thursday, when a passenger bus, carrying 36 passengers, rolled over near a toll station on Fuyin Expressway in Binxian county, the publicity department of Binxian said.

Five people were confirmed dead, and 30 others were injured, five of who were in critical condition have been sent to Xianyang Central hospital for treatment, and the rest are receiving treatment in Binxian County Hospital.

The cause of the accident is under investigation.