. >> reporter: police say the menuedmenu ed men used power tools to drill and shimmying through pipesfter cat walks and pipes they walked 300 to 400 yard done a tunnel coming to a man health that they sawed open with their tools. the manhole they surfaced was one block from the prison walls. according to authorities mitchell was supposed to beat driver of a getaway car. instead checking herself into the hospital with what was called a panic attack. >> when mitchell doesn't show up the mexican plan gets foiled. then they head north towards canada. >> reporter: the inmates were added to the u.s. marshals' most wanted list reward set at $50,000 apiece. posters of the men distributed along the canadian and mexican borders. the escaped killers considered armed and dangerous. sweat was convicted for killing a police officer. and matt in jamil for killing and dismembering his boss' body. >> cop killer is one thing. dismembering somebody oh it's really out there. so i kind of one of those guys you keepen front of you. you don't turn your back on them. >> reporter: eric jensen was an inmate th