A horrific, wrong-way crash on Long Island left one man dead and an off-duty Suffolk County cop seriously injured and facing charges on Tuesday, officials said.

Robert Scheurer, an officer assigned to the Third Precinct, had been driving his 2000 Nissan pathfinder eastbound in the westbound lanes of the Sunrise Highway in West Islip when he smashed into a 2016 Ford van between exits 39 and 40, according to police.

The van caught fire as a result of the collision and the driver, whose identity was not immediately released, was later pronounced dead at the scene, police said.

Scheurer was rushed to Southside Hospital with serious injuries and was later charged with reckless endangerment and suspended from duty without pay.

The crash shutdown Sunrise Highway in both directions for nearly four hours.