roderick macarthur justice center at better government association asked special prosecutor to look intothat you rj vanecko identified near division and got into a fight david koschman if this had on the pavement and died 11 days later from injuries. after initial investigation of the victim's mother said felt she needed more. >> i go there often telling him i am sorry that i did not fight for him. it was a difficult thing for me to do fighting to save myselfthinking to reporters in new stations the fight is still here >> chicago police the public and state attorney operas have not commented on request for special prosecutor roderick macarthur justice center say the investigation into david koschman death was compromised. >> police say a teenaged boy lived a nightmare with mother and fiancee treatment reportedly show bad that if convicted the couple could get 20 years in prison old indiana police have charged the mother tina graham @ beyonce vernon widner with 16 counts of felony child abuse vernon widner accused of choking the boy the couple about allegedly kept in dog colonel and tried