WOODBURY - The family of a teen who was killed when he was struck by a sheriff's deputy driving on the Long Island Expressway is demanding justice and answers.Back in March, 18-year-old Billy Schettino stopped on the side of the LIE after he was sideswiped by another car. A passing sheriff's deputy didn't see him in time and fatally struck him, officials say.Investigators say the deputy, Richard Tedesco, was blinded by glare from the setting sun when the accident occurred. Schettino's relatives say they are devastated by the crash. They are still awaiting autopsy results and say the other driver that originally sideswiped the teen still has not been identified. Lately, their calls to investigators have gone unanswered, the family says.According to the Suffolk County Sheriff's Department, Tedesco is back on full duty, but he is not patrolling the LIE. The teen's relatives say that's not good enough.The Medical Examiner's Office says the autopsy results will not be released until the investigation is complete. In an email, Tedesco said he can't comment on the investigation, but said his thoughts and prayers are with the teen's family and friends.To watch extended video with Schettino's relatives, go to channel 612 on your iO digital cable box and select 'iO Extra.'SCC student killed by hit-and-run driver in BrentwoodOfficials: Deputy sheriff hits, kills teen driver on LIE