State Police are investigating a fatal motorcycle accident that occurred on Friday in Westchester County.

At approximately 2:15 p.m. on Friday June, 29, 2018, Daniel J. Thiel, age 38, of Sandy Hook, CT, was operating a motorcycle on State Route 121, when he struck a vehicle at the intersection of State Route 138.

Thiel was ejected from the motorcycle during the collision and subsequently pronounced deceased at the scene by arriving paramedics.

Traffic was shut down at the intersection for approximately four hours due to the collision and police investigation.

The cause of the collision is still under investigation.