UpdatedWed, Jan 27, 2021 at 5:05 pm ET Replies(2) Ronald Destefano, 54, of Lake Grove, was killed in a hit-and-run in Stony Brook on Dec. 20, police said. (Suffolk County Police Department) STONY BROOK, NY — Suffolk County Crime Stoppers and the family of Ronald Destefano are seeking help from the public in finding the person who police said killed Destefano in a hit-and-run in Stony Brook on Dec. 20. Destefano, 54, of Lake Grove, was crossing Route 347 from south to north at Hallock Road when he was struck by a westbound vehicle at 6:45 a.m., police said. The driver drove off, police said.Destefano was pronounced dead at the scene. Detectives believe a silver vehicle, which sustained front and/or passenger-side damage, may have been involved in the crash.