Maui police are investigating a solo car crash on Hana Highway Tuesday morning that sent a 42-year-old man to the emergency room in critical condition.

The Maui Police Department said that about 10:20 a.m. Tuesday, officers responded to a single motor vehicle accident at the highway near mile marker 28.

Upon arrival, officers found the pickup truck on top of a wire fence with the driver still inside. An off-duty Maui firefighter who arrived on the scene shortly after the accident was helping him.

Due to the extent of damages, Maui Fire Department had to extricate the man from the truck.

He was treated on scene by medics, then transported to Hana Airport and medivaced to Maui Memorial Medical Center’s emergency room for further treatment. Maui police said the man’s condition at the time was critical.

Police said a preliminary investigation found the driver did not display any signs of impairment.