VANCOUVER, Wash. — Authorities say a possible road rage incident in Vancouver on Friday morning resulted in a three-vehicle crash and an injured state trooper, who was sitting in his car during an unrelated traffic stop when the crash occurred.

One of the drivers, 23-year-old Mikayla Tice of Battle Ground, was taken to a hospital with minor injuries and later charged with driving under the influence of drugs.

The other driver has not been charged with a crime, but Trooper Will Finn of Washington State Patrol said the person could be charged pending an investigation.

The crash happened at around 9:40 a.m. on southbound Interstate 205 near State Route 500. Southbound I-205 was closed until about 1:30 p.m.

The trooper was on the right shoulder, involved in a traffic stop with a semi-trailer. He went back into his vehicle to fill out paperwork, according to Finn.

At that time, witnesses said two drivers on southbound I-205 were in some sort of a road rage incident, the cause of which is still unknown, Finn said. Witnesses said the drivers were speeding and passing on the right-side shoulder prior to the collision.

At some point, both drivers lost control of their vehicles and crashed, Finn said. It’s not known if they hit each other but at least one of the drivers collided with the trooper’s vehicle, Finn said.

The trooper suffered minor injuries, according to Finn.

An investigation is ongoing.