A man was killed in a car crash on Route 46 in Clifton after his SUV hit a tree early this morning, police said.

Christopher Oleschuk, 30 of West Paterson, crashed his 2003 Chevrolet Trailblazer on Route 3, near Grove Street around 1:30 a.m., said police Lt. John Link. There were no other passengers or vehicles involved in the accident.

The vehicle, heading westbound on Route 3, struck a curb, continued onto a grass area and crashed into a tree, Link said. It was raining at the time of the accident, Link said, but it wasn't known if that was a factor.

Oleschuk was pronounced dead at the scene, the lieutenant said.

The highway was closed for about four hours this morning but has since been reopened.

The cause of the crash remains under investigation.

Anyone with information regarding the crash is asked to call Clifton police at 973-470-5906.