Updated at 11 p.m.

A shootout erupted on Interstate 205 southbound and I-84 westbound as Vancouver police chased a homicide suspect from Washington into Oregon on Tuesday night, according to officers at the scene. By the time it was over, two men were in custody, one of them linked to the Jan. 22 homicide of Kelso convenience store clerk Kayla Chapman, 30, Kelso police said.

Vancouver police had notified Portland officers around 7:30 p.m. as they chased two men in a dark pickup truck from Vancouver’s Mill Plain exit southbound on I-205 into Oregon on Tuesday night.

As the chase headed westbound onto I-84, someone in the truck fired gunshots at Vancouver police. At least one returned fire.

The gunshots struck the windshield of a pursuing Vancouver police vehicle, injuring one officer. The officer may have suffered glass to the eye and was taken to Legacy Emanuel Medical Center Tuesday night for treatment, police said. The officer is expected to survive.

One of the men in the truck suffered life-threatening injuries that weren’t gunshots, said Lt. Kristina Jones, a Portland police spokeswoman. She said no Portland officers were involved in the chase or the shooting. The police bureau is investigating the officer-involved shooting, and Jones referred all questions related to the Washington homicide investigation to Vancouver police.

Vancouver police didn’t immediately response to a request for comment Tuesday.

Police described what ensued as a "mobile gun battle'' on the freeway that left shell casings scattered on the highways.

Portland police responded with Vancouver police, and they cornered the suspect truck on I-84 westbound.

The suspect in the homicide -- the Jan. 22 killing of Kelso convenience store clerk, Kayla Chapman, 30 -- and one other person were taken into custody, police said.

The dark pickup truck pursued by Vancouver police contained the driver of the vehicle involved in the Kelso homicide and convenience store robbery, Kelso police said.

Erkinson K. Bossy, 23, was taken into custody once the truck was cornered and stopped on I-84 westbound. Kelso police said they’ll seek to extradite him from Oregon to charge him in connection with Chapman’s homicide. It’s not immediately clear if he was the man seriously injured in the truck.

Another suspect in the Chapman homicide was arrested earlier Tuesday. About 3 p.m., Vancouver police located Nenemeny W. Ekiek, 21, and booked him into the Cowlitz County jail on a murder allegation, Kelso police said. Nemeny was a passenger in the vehicle at the time of the convenience store robbery and fatal shooting of Chapman, Kelso police said.

Portland police were sending two mobile police command centers to two crime scenes - one at the I-205 southbound interchange to I-84 westbound, and another on I-84 westbound where the suspect’s truck was stopped to help investigate, as the Vancouver Major Crimes Unit also responded. By the time the chase was over, shell casings littered the highways and police were calling for more officers to help search for them.

The chase and shooting led to Portland police closing a portion of the highway to investigate what occurred. As of 11 p.m., I-84 west was still closed from I-205 to I-5 and expected to remain blocked for several hours.

Everton Bailey Jr., Mark Graves and Beth Nakamura of The Oregonian/OregonLive staff contributed to this report.

3 ambulances just drove away. pic.twitter.com/H7YGaKTdRB — Everton Bailey Jr. (@EvertonBailey) February 6, 2019

Here’s the scene toward the 33rd Ave. exit. There’s a minivan and white sedan parked between where emergency vehicles have stopped traffic. At least a dozen police cars on this end. A car alarm keeps blaring. pic.twitter.com/QAE5s4OwTW — Everton Bailey Jr. (@EvertonBailey) February 6, 2019

UPDATE: MAX Blue, Green and Red line service experiencing up to 40 minute delays thru 9:30 p.m. from earlier blocking police activity near Hollywood Transit Center. — TriMet Service Alerts (@trimetalerts) February 6, 2019

MAX Blue, Green and Red lines eastbound experiencing up to 15 minute delays due to blocking police activity near Hollywood Transit Center. — TriMet Service Alerts (@trimetalerts) February 6, 2019

This is a breaking news story and will be updated as we learn more.