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Police in China have arrested a man on suspicion of castrating or partially castrating four patients at a nursing home, state media said, in the latest scandal to hit the country's medical sector.
Doctors discovered on Tuesday (local time) that three men at the nursing home in the northeastern province of Heilongjiang had had either one or both of their testicles removed with a blunt razor, the official Xinhua news agency reported.
The fourth victim was not found until later after police carried out a full inspection of the facility, the news agency said.
The victims are in hospital, though their injuries were not life threatening, Xinhua added.
"The victims identified the perpetrator as a worker at the nursing home, while a staff member at the home said the man, in his 30s, was also housed there for mental illness," it said.
Police have not identified the suspect or said why he carried out the attacks, Xinhua added.
China's vast and underfunded healthcare system has long be plagued by problems including corruption, poor training and attacks on staff by patients unhappy with poor treatment.