SHANGHAI, July 1: A Chinese man armed with a knife killed five policemen on Tuesday when he went on a stabbing frenzy at a Shanghai police station in what authorities said was a revenge attack.

The man stabbed nine officers and a security guard at the station in the north of the city, the Shanghai public security bureau said in a statement.

Officers quickly overpowered and arrested the man, an unemployed 28-year-old Beijing native, police said, but five police were killed in the attack.

The man, identified only by his surname Yang, confessed he had wanted revenge after police arrested him in October on suspicion of stealing bicycles.

“He was unhappy ... In order to take revenge, he decided to commit criminal actions,” the statement said.—AFP