The pedestrian critically injured in last night's crash died shortly after arriving at the hospital for treatment. He's been identified as a 23-year-old male.

The involved driver, 55-year-old Eric Sebastian Oman, was arrested and booked for Driving Under the Influence of Intoxicants (DUII).

Traffic investigators learned that the 23-year-old male was with friends and was exhibiting strange, paranoid behavior just prior to the crash - behavior consistent with either a mental health crisis or drug psychosis, both of which is not normal for the young man according to friends.

Friends attempted to restrain the 23-year-old man as he tried to run into traffic but he broke free and ran into the path of Oman's truck, where he was struck and eventually died as a result of his injuries.

The investigation is continuing and, once complete, will be forwarded to the Multnomah County District Attorney's Office for review.