HEFEI - A hospital attacker with a mental disorder was sentenced to life imprisonment after a fatal assault at a hospital in East China's Anhui province last November, said a local court Tuesday.

Cai Chunfeng, 42, committed the crime of intentional homicide when he stabbed medical staff members on November 13, 2012 at the Second Affiliated Hospital of Anhui Medical University, according to the Hefei Intermediate People's Court.

Cai was suspicious of the medical staff as he felt uncomfortable after receiving an enema and skin test before an operation, the court said.

He killed one nurse and injured four other medical staff, according to the court.

Cai was identified as having a paranoid-type mental disorder on April 16 and had diminished criminal responsibility at the time of the crime, according to the expert testimony institute of the Shanghai Mental Health Center.