A teenager who killed a doctor and injured three others at a local hospital in Harbin, capital of northeast China's Heilongjiang Province, has received a life sentence.

On Friday, Li Mengnan, 18, was found guilty or intentional homicide at the Intermediate People's Court of Harbin.

He was also ordered to pay more than 680,000 yuan ($108,743) to the victims' families, in compensation.

On March 23, 2012, Li, an out-patient with the First Affiliated Hospital of Harbin Medical University, attacked four medical workers with a knife after "misunderstandings" toward the treatment program prescribed by doctors, the ruling said.

Wang Hao, a 28-year-old intern of the hospital, was stabbed to death, and three others suffered injuries.