BEIJING, January 28 (RIA Novosti) - At least seven people were killed and an unspecified number was injured after a cargo train rammed into a passenger bus in northeastern China, Xinhua news agency reported on Monday.

The accident occurred in the city of Heihe, in Heilongjiang Province, at around 7:30 a.m. on Monday local time.

Six people were killed at the scene of the crash and another one died on the way to a hospital, the agency said, adding that all victims were passengers of the bus.

Policemen are working at the scene of the incident to establish the cause of the tragedy.