Sean Grayson, former deputy convicted of killing Sonya Massey, dies in prison, lawyer says

Sean Grayson, a former Illinois sheriff's deputy convicted of fatally shooting Sonya Massey inside her home, died Sunday while serving a 20-year prison sentence, his lawyer said. The case had become a flashpoint in debates over police use of force. Grayson's death occurred in prison, though further details were not immediately disclosed.