An 18-year-old man beat a doctor to death with an iron bar at a hospital in Heilongjiang province on Monday because he was unhappy with the medic's treatment of his illness, police said.

Sun Dongtao, 45, head of the ear, nose and throat department at a hospital affiliated with the State-owned Beiman Special Steel Co in Qiqihar, was attacked at 10:20 am, Xinhua News Agency reported. He died while receiving emergency care.

The suspect, surnamed Qi, is a Qiqihar resident and had recently received treatment from Sun for a nasal problem.