A network of self-styled "predator hunters" in Pennsylvania claims to have helped catch hundreds of alleged child predators, but the state's attorney general warns that these vigilante stings can be dangerous.

Brian Knepp, who runs 814PredHunters, a team of 15 people known as decoys, posing online as kids based out of western Pennsylvania, started the group three years ago after a man Knepp thought was a friend raped a child. Advertisement

"I want every adult online to be completely afraid of even talking to a child," Knepp said. He added, "I was fooled, and I'm pretty hard to fool, I felt anyways. But I wanted to do everything that I could possibly do to have this not happen again."

Knepp's team members say they have helped catch nearly 300 people they say are accused child predators.

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