A 30-year-old Waimanalo man has died from injuries he sustained in Saturday’s head-on collision in Hawaii Kai.

The Honolulu Medical Examiner’s Office has identified him as Scot K. Aiona. The exact cause of death is pending.

Police said a white 1984 Toyota pickup truck driven by a man, later identified as Aiona, was traveling westbound on Kalanianaole Highway when he crossed over the double solid yellow line into the eastbound lanes and collided head-on with a white 2010 Mercedes-Benz sport utility vehicle driven by a 56-year-old Honolulu man.

Aiona was taken in critical condition to a hospital where he died Wednesday.

A 57-year-old male passenger in the second vehicle was taken in serious condition to a hospital.

Police said speed was not a factor.

It’s unknown at this time whether drugs or alcohol were involved. The investigation is ongoing.

This is the 17th traffic-related fatality on Oahu this year compared to 23 at the same time last year.