HONOLULU -- Police in Honolulu said they are investigating an overnight fatal wreck on the Pali Highway.

Authorities said the incident occurred Wednesday at about 11:30 p.m. near the entrance of the Pali Lookout heading toward Kailua.

Investigators said a car veered off the road, hit a sign and went airborne before crashing into a tree.

Police said the victim -- who was in his 30s -- was the driver of the car.

A passenger in the car was taken to an area hospital. He is currently listed in serious condition, officials said.

Police said speed was a factor in the crash.

The incident marks the 17th traffic fatality on Oahu this year, KITV reported.