Five people were killed and another four injured in a multi-vehicle crash involving a total of 23 vehicles on an expressway in east China's Anhui Province on Sunday morning.

The pileup took place at around 5:00 am local time on the Anqing section of the Yuexi-Wuhan Expressway, linking the southwest part of Anhui Province with Wuhan, capital of central China's Hubei Province. 

Among the five dead, four were killed after falling off a bridge on the site.

The traffic on the expressway has resumed. The cause of the accident is still under investigation.