HARBIN, May 24 -- Four people were killed and another six were injured on Sunday noon in a two-vehicle collision in northeast China's Heilongjiang Province, local authority said.

The pile-up, which involved a Buick and a Mazda, occurred at about 12 p.m. in Yichun City, according to the municipal government.

The injured are receiving treatment at a local hospital.

The cause of the accident is under investigation.