Two men were killed and a woman and her 3-year-old son were critically injured in a head-on crash in Deer Park on Friday afternoon.
Suffolk County police said Robert Fattibene, 53, of Smithtown, was driving a Dodge Durango northbound on Commack Road when he crossed into the southbound lane and hit a Nissan Altima driven by 32-year-old Herver Leonel Garcia Munoz of Brentwood at 6:35 p.m.
Both men were pronounced dead at the scene.
Yesenia Marilu Martinez Vasquez, 24, a passenger in the Nissan, was airlifted to Stony Brook University Hospital.
Justin Martinez, the toddler who was riding with his mother and father in the car, was taken to Good Samaritan Hospital Medical Center in West Islip. Both the mother and child are listed in critical condition.
First Squad detectives impounded the vehicles for safety checks, are continuing the investigation and ask anyone with information about the crash to contact them at 631-854-8152.