0157 hours Commack Ambulance and the Commack Fire Department were dispatched to a traffic collision in front of 94 Dovecote Lane. Units arrived to find that a single vehicle had left the roadway and overturned. The three occupants were removed from the vehicle. The 48 year old male driver was transported to Huntington Hospital. The two passengers were transported by CVAC to St. Catherines hospital. One, a 32 year old male from Ronkonkoma, was pronounced dead at the hospital. FD personnel secured the vehicle. Commack Ambulance 2nd Assistant Chief Brimer operated with 2-16-17, 2-16-20 and 2-16-Medic. The scene was turned over to the Suffolk Police for the investigation. According to Suffolk Police, the driver was charged with DWI.