XI'AN - Six pileups on a fog-shrouded expressway section in Northwest China's Shaanxi province Thursday morning have left three people dead and four others injured.

Police said all of the six accidents occurred in the Baotou-Maoming Expressway in Yulin city, Shaanxi, at around 6 am, and involved 19 vehicles, 18 of which are heavy trucks.

The injured have been rushed to hospital.

Traffic on the expressway was resumed at 9 am after hours of blockage.