A police officer has been cleared of wrongdoing after shooting and killing a passenger at a railway station in northeast China's Heilongjiang province, the local police department said on Thursday.

Police Officer Li Lebin shot Xu Chunhe on May 2 at the Qing'an county railway station.

An internal investigation showed that Li did not violate protocol and that the shooting occurred as part of his duty, said the statement from Harbin railway police who conducted the investigation.