But until Tuesday, no bodies had been found.
That changed after the Snohomish County Sheriff's Office said one of the suspects provided information that led detectives to a remote location near the couple's home. There — about 50 miles northeast of Seattle near the town of Oso — deputies found buried remains in an area where the couple's vehicles were found weeks ago.
"We are waiting for medical examiner confirmation but we have reason to believe that they are Patrick Shunn and Monique Patenaude," Snohomish County Sheriff's Office spokeswoman Shari Ireton said at a news conference.
Authorities had been searching for the couple since they were reported missing April 12.
