A motorcyclist died from his injuries caused by a crash on Kunia Road Thursday night.

Stuart Jackson, 28, of Wahiawa, was transported to Queen's Medical Center - West Oahu in critical condition where he was pronounced dead.

Around 6:30 p.m. Thursday on Kunia Road, a mile north of Anonui Street, Jackson's motorcycle was traveling south when it crashed into the side of a pickup truck driven by a 37-year-old man. The truck was traveling north and turning into a private dirt road at the time.

Jackson was ejected from the motorcycle and onto the roadway. He was wearing a helmet.

It is unknown at this time if speed, alcohol, or drugs were factors in the crash. An investigation is ongoing.