14 December 2015 :

A Chinese medical student who murdered his roommate at a prestigious Shanghai university by poisoning a drinking water dispenser was executed, the official Xinhua news agency reported.
Lin Sinhao was convicted by a Shanghai court of murdering fellow student Huang Yang “out of spite” by spiking a water dispenser with the toxic chemical N-Nitrosodimethylamine in April 2013.
He was put to death after failing in a series of appeals, and met members of his family before being executed, Xinhua said.
Shortly after his execution was announced, state broadcaster CCTV aired an interview with him in which he expressed remorse on camera and said his death would mean “paying off the debts”.
“I owe a lot to Huang Yang’s parents. I wish I could do something to compensate them and wish they can continue their life in a healthy and positive manner,” Lin said. “I should take responsibility for what I did.”
The supreme court said Lin’s action was “abominable” and his crime “extremely severe” as he knowingly used a hazardous chemical to poison the victim and intentionally concealed the fact during Huang’s two weeks of hospital treatment, Xinhua said.