The man convicted of murdering Michigan State Police trooper Paul Butterfield last fall was taken off life support and died, WOOD-TV is reporting.
Knysz was on life support at Allegiance Health Hospital in Jackson after hanging himself with a bed sheet in his cell.
WOOD-TV reports he was removed from life support around 10:30 a.m. Thursday. He was declared brain dead on Tuesday.
Knysz was on life support while doctors performed tests to see if his organs could be donated. He was a registered organ donor.
WOOD-TV is reporting Knysz's family said his organs were harvested after he died Thursday.
He was serving a life sentence for the murder of Trooper Butterfield.