A knife attack in a retail store in Beijing has left a woman dead and three other people injured, police said.
The woman died after hospital treatment failed, Xinhua cited the Beijing Public Security Bureau as saying.
The suspect, a Beijing resident surnamed Wang who was born in 1963, had a history of mental illness.
He was admitted to a local psychiatric hospital for treatment in September 2012, and left the hospital in January this year, police said.
After police received a report of the knife attack, officers rushed to the scene and captured the suspect on the spot.