Court documents obtained by KIRO 7 show how three sisters from Wenatchee died.
According to documents filed in Chelan County Superior Court, 9-year-old Paityn, 8-year-old Evelyn, and 5-year-old Olivia perished as a result of asphyxiation.
The girls were reported missing on Friday following a visit with their father, Travis Decker.
Law enforcement is actively searching for him.
On June 2, law enforcement and the FBI limited the area between Icicle Road and Chumstick Road near Leavenworth.
They said they discovered Decker’s truck at the Rock Island Campground, but there was no one inside.
According to court records, cops and deputies discovered zip ties and plastic bags scattered over the scene.
According to the records, the truck included two bloody handprints.
While exploring the area, law officers discovered the bodies of three young girls.
According to the court documents, the murders may have been premeditated.
According to cellular records obtained Saturday, Decker likely visited the location on Thursday before picking up the girls for his scheduled visit.
Police said they have probable cause to arrest Decker on three counts of murder and kidnapping.
Anyone who sees him should phone 911 immediately.
Police believe Decker is a former military member with significant training.
It is unclear whether he is currently armed, but he may represent a threat if addressed.