Here is the opinion in State v. Kurtz. The tribal amicus brief is here: Kurtz Amicus Brief (final as filed)

From the court’s press release:

Today, in a criminal case involving tribal police officers in Oregon and their status under state law, the Oregon Supreme Court held that, with regard to the crimes of attempting to elude a police officer, ORS 811.540, and resisting arrest by a peace officer, ORS 162.315, the legislature intended the statutory terms “police officer” and “peace officer” to include members of tribal law enforcement departments.