For the second time in two weeks, Pennsylvania police conducted a major manhunt for escaped inmates. This time, it was a group of teens who fled a detention center after overtaking two female guards.

The manhunt for convicted murderer Danelo Cavalcante, who escaped from a prison near Philadelphia last month, is nearing the two-week mark. So how do authorities find him?

Danelo Cavalcante "is considered armed and extremely dangerous," police say. "He is now armed with a .22-caliber rifle with a scope and flashlight mounted on it," stolen from a resident's garage.