The NYPD says Sgt. Anthony Johnson died early Sunday morning.
Nassau County police say Johnson's Jeep Cherokee crashed into a tree and burst into flames on Sunrise Highway in Valley Stream at around 3 a.m.
Firefighters discovered Johnson's body after extinguishing the blaze.
The 32-year-old officer lived in West Babylon.
The NYPD says Johnson worked out of the 114th Precinct in Queens.