The man who killed Michigan State Police Trooper Paul Butterfield has been declared clinically brain dead after hanging himself in prison.
A family spokesperson reported the news to our sister station, WOOD-TV, on Tuesday evening.
The spokesperson said Knysz remained on a ventilator at Allegiance Health hospital in Jackson while doctors performed tests to see if his organs could be donated. Those tests were expected to be completed within 24 to 36 hours. Knysz is registered as an organ donor.
Knysz was in critical condition Monday, after trying to hang himself with a bedsheet at the Jackson Prison.
Knysz was sentenced to life in prison last week in the September murder of State Police Trooper Paul Butterfield.