Former Illinois deputy Sean Grayson has been convicted and found guilty in the fatal shooting of Sonya Massey.RELATED: Tia Mowry Shares Emotional Message After Watching Bodycam Footage Of The Shooting Of Sonya Massey (WATCH)More Details On Sean Grayson Being Found Guilty In Fatal Shooting Of Sonya MasseyAccording to Peoria County, Sean Grayson's criminal trial began earlier this month, on October 20. According to NBC News, Grayson was initially charged with first-degree murder of Massey.