A Warren County man has died as the result of a one-vehicle crash Wednesday in McKean County.

According to Pennsylvania State Police, Aaron M. Arnold, 26, of Warren, was killed when the truck he was driving “at a high rate of speed,” eastbound on Route 59, left the road on a left-hand curve at about 7:04 a.m. Wednesday in Keating Township, McKean County.

Police said the vehicle struck a guardrail, crossed the road, and struck multiple trees.

Arnold was not wearing a seatbelt at the time of the crash, according to police, and was pronounced dead at the scene by McKean County Coroner Michael Cahill.