Three girls were killed in a college building in Zhengzhou city of Central China’s Henan province early Tuesday morning, local newspaper reported on Tuesday.

The suspect is a man about 20-year-old and killed the girls with a blade, the Dahe Daily reported.

Police have sealed off the No 7 building of the college, Henan Polytechnic for further investigation.

Police dogs are searching the building and police are looking for the suspect in and around the campus, according to the report.