ZHENGZHOU -- Nine people were killed on Tuesday in 16 pileups on a fogbound expressway in central China's Henan Province, local authorities said on Wednesday.

The accidents occurred on Tuesday morning on the Zhumadian section of Jing-Gang-Ao highway that links Beijing with Hong Kong and Macao, and involved 56 vehicles, according to local police.

Eight people were killed on the scene while 95 people were trapped. Of all the trapped people that were rescued by 1 p.m. on Tuesday, one died after emergency treatment failed.

A further investigation into the accident is under way.