Andrew Lester, the 86-year-old white man who pleaded guilty Friday to shooting Black teenager Ralph Yarl in the head after Yarl mistakenly rang his doorbell, has died, prosecutors in Clay County, Missouri, said Wednesday.

The prosecutors did not say how or when he died. He was facing up to seven years in jail after reaching a plea deal and was awaiting sentencing March 7.

“While the legal proceedings have now concluded, we acknowledge that Mr. Lester did take responsibility for his actions by pleading guilty in this case,” Clay County Prosecuting Attorney Zachary Thompson said in a statement. “Our thoughts remain with both families affected by this tragic incident as they continue their healing process.”

Yarl’s family members said in a statement that Lester never apologized for what he did and that “instead, he and his attorney used every legal maneuver possible to delay accountability.”