PORTLAND, Ore. (KOIN) — A man appears to have shot and killed his wife inside of a car on the side of Highway 26 near the city of Banks before turning the gun on himself, according to authorities.

Washington County Sheriff’s Office said the family members of Beaverton residents Alejandro Gomez-Blanco, 46, and Yolanda Constantino, 44, have been notified and that the investigation into their deaths is ongoing.

Authorities said deputies responded to a 2012 black Nissan Altima parked along the side of westbound Highway 26 near NW Mountaindale Road around 3:30 a.m. Wednesday and found the bodies.

Detectives with the sheriff’s Violent Crimes Unit and members of the Forensic Science Unit were called to the scene. A handgun was found inside of the car, according to authorities.

Highway 26’s westbound lanes were closed for more than six hours amid the investigation.

No other details were immediately available.