Authorities say they’re chasing about 15 leads per day in the search for an inmate who escaped from a northwestern Arizona prison and his accomplice.

John McCluskey and his fiancee, Casslyn Welch, have been on the run for more than two weeks and are considered armed and dangerous.

Search efforts were focused Monday in the northwestern United States, including Montana, and the U.S.-Canada border.

Fidencio Rivera of the U.S. Marshals Service in Arizona says a majority of tips are coming in from Montana, where the two were last seen Aug. 6.

Phoenix police investigated a tip Monday that didn’t pan out.

Authorities say Welch helped McCluskey and two other inmates escape from a state prison in Kingman on July 31.

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