Authorities said Thursday they searched the home of one of the fugitive brothers suspected in the presumed killings of a Washington state couple.

Patrick Shunn, 45, and his wife, Monique Patenaude, 46, of Arlington, were reported missing a week ago. Tony Reed, 49, and his brother John Reed, 53, have been charged with murder, though no bodies have been found.

Detectives conducted searches Wednesday at the Ellensburg homes of Tony Reed and his parents, the Snohomish County Sheriff’s Office said in a statement.

The statement issued Thursday said two storage units were also searched.

“Detectives are following up on investigative leads, as well as evidence found at several locations, including the former property of John Reed, the home of the victims, the vehicles of the victims, and the vehicles of the suspects,” the Sheriff’s Office said.

John Reed signed the title of his pickup over to his mother after the couple was reported missing and then took his parent’s car from Ellensburg to Arizona, where it was located this week, the Seattle Times reported.

Detectives believe the brothers obtained another car in Arizona, a gold Acura sedan, from friends who knew they were on the run from police.

A license plate reader captured the Acura’s plate near the California border town of Calexico on Monday, authorities said.

A $5,000 reward has been posted for information leading to the arrest of either brother, Q13 Fox reported late Thursday.

Detectives believe the motive for the killings was a property dispute between John Reed and Shunn and his wife.

The Associated Press contributed to this report.

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