The 2005 murder of a Norwalk teen has never been solved, but the teen's mother claims there are people that know who fired the fatal shots.Thounsa Addison, 17, was killed in a drive-by shooting on January 24, 2005. Stephanie Keeling admits her son was on the wrong side of the law sometimes, but says he didn't deserve to die.Keeling says she's been told the word on the street was that the bullets were meant for Kareem Leach, a passenger in her son's car. She claims there are people who have information that could help with the case, but have remained silent out of fear of retaliation.Norwalk police are still offering a $52,000 reward for information leading to the arrest of Thounsa Addison's killer. Anyone with information is asked to call 203-854-3051