 He was committed to state Department of Youth Services custody until his 21st birthday, followed by a suspended term of adult incarceration of two to three years.According to court records, while out on bail awaiting trial for the 1996 offense, Addison was charged at age 17 with armed robbery and two counts of assault and battery with a dangerous weapon for robbing, kicking and stabbing Tredaine Purdy in neighboring Roxbury on March 20, 1997.The incident took place at a park.