GREAT FALLS, Mont. - The search for two fugitives from Wyoming has expanded into Canada.

The U.S. Marshall's service said it received tips the men were in the Whitefish, Mont., area about five days ago and then crossed the Canadian border.

Shannon Parazoo and his son, Alonzo Durgin, are considered two of "America's Most Wanted."

Authorities received reports 43-year-old Parazoo and 28-year-old Durgin were seen in Montana last week.

The duo escaped from a work-release program in Casper, Wy., two weeks ago.

Parazoo was convicted in 1985 of second-degree murder. Durgin was convicted of aggravated robbery and aggravated assault in 1997.

Authorities suspect Parazoo's wife, Rose, and two children, ages 12 and 14, are with the fugitives.

The two men are considered armed and dangerous. Anyone with information about their whereabouts is asked to call 911 immediately.