A convicted killer on the run in southeast Pennsylvania is now believed to be armed with a rifle after police say he stole a firearm from a homeowner on Monday night.

Danelo Cavalcante, who escaped from the Chester County Prison west of Philadelphia nearly two weeks ago, is believed to be armed with a .22-caliber rifle featuring a mounted scope and flashlight, state police said Tuesday.

Hes killed two people previously. I would suspect that hes desperate enough to use that weapon, state police Lt. Col. George Bivens said at a morning press conference.