A former Illinois sheriff's deputy has died in prison. The deputy, Sean Grayson, was convicted of killing Sonya Massey, who was shot inside her home. This incident had become a point of contention regarding police use of force.

Grayson's death occurred on Sunday, according to his lawyer. Further details about his death are available from the source. The circumstances surrounding Grayson's conviction and imprisonment are known, but additional information about his case and death can be found through the original report.