PITTSBURGH — Six inmates who tunneled out of a maximum-security prison used a jackhammer and other prison-issue power tools, along with blueprints of the place, guards said.
The men--two of them convicted killers--apparently used tools assigned for use by inmates working on a steam-pipe installation project, according to the guards, who spoke on condition of anonymity.
Some prisoners worked unsupervised on the pipe-installation project for as much as an hour at a time, one guard said. The project was in a cellar under the prison machine shop.
Timothy Collins, spokesman for the state prison, refused to say what tools were used in the breakout Wednesday from the 115-year-old prison.