Patrick Shunn, and Wife, Monique Patenaude Missing Since 4/11/16 in Arlington, WA

45 year old Patrick Shunn and his wife, 46 year old Monique Patenaude have been missing since Monday, April 11, 2016 in Arlington, Washington.  Two days after a married Arlington couple disappeared under suspicious circumstances, the Snohomish County Sheriff’s Office is asking for the public’s help in finding them. Anyone who has information about the investigation should call the sheriff’s anonymous tip line at 425-388-3845.

A man says his brother and his wife have disappeared from their Arlington home and have not been seen since Monday.

Erik Shunn wrote KIRO 7 Tuesday saying his brother Patrick Shunn, and Patrick’s wife, Monique Patenaude, are missing under unusual circumstances after an ongoing dispute with a neighbor.

Shunn says they were last seen Monday at 11 a.m. and were supposed to go to a concert with their neighbors later that day, but never showed up.

Calls to the couple’s cellphones go directly to voicemail and their dogs and livestock have been left unattended.

“What makes this suspicious for detectives is the fact that Patrick and Monique, it’s very unusual for them not to be in touch with family and friends this long,” Snohomish County Sheriff’s spokesman Shari Ireton.

UPDATE I: Help us find missing Arlington couple, Sheriff’s Office asks.

Shunn went to work Monday, but he failed to show up Tuesday at his job at an aircraft-interior refurbishing firm in Kirkland. Meantime, Patenaude was last seen about 1?p.m. Monday near the couple’s home in the 27800 block of Whitman Road, near the site of the Oso mudslide.

“Their disappearance is considered suspicious because it’s unusual for them not to be in touch with their work or their family and friends,” sheriff’s spokeswoman Shari Ireton said Wednesday.

“Both vehicles are gone from the house and both cellphones have been shut off,” the uncle added.

Detectives with the sheriff’s Major Crimes Unit are now investigating and looking for the couple’s vehicles: a tan 2000 Land Rover Discovery, with the Washington license-plate number AR02639; and a black 1995 Jeep, with the Washington license-plate number of WB02789.

Court records show the couple are now embroiled in a legal dispute with neighbors, some of whom Shunn and Patenaude claim have repeatedly trespassed on their property near the Stillaguamish River with recreational vehicles and unleashed dogs. A trial on the civil case has been set for later this year.