Two pedestrians are dead and a 28-year-old Stanwood man is in custody after a collision early Thursday on Highway 9 in Arlington.

The crash occurred around 2:38 a.m. near 204th Street Northeast, police said.

Two adult pedestrians died at the scene, police said.

Both directions of Highway 9 were closed for several hours between East Highland Drive and Eaglefield Drive while officials investigated. The 204th Street Northeast intersection was also blocked.

All lanes have reopened, the Washington State Department of Transportation said shortly after 11:30 a.m.

The driver of the vehicle was booked into the Snohomish County Jail for investigation of driving under the influence and two counts of vehicular homicide.