The man was sent to hospital, where he died about an hour later. The policeman, 28, sustained a 10 centimeters wound on his back and a punctured lung and underwent surgery, police said.

Speaking to reporters early on Friday (July 2), Tang said the stabbing was a "local lone wolf terrorist attack."

He said police searched the home of the 50-year-old, whom he did not identify, and said materials on his computer showed he was "radicalized," without providing further detail.