Hayden will kill you.

Turns out, Raising Helen actress Hayden Panettiere is now a ninja-in-training.

Rumors are flying that when Hayden was on the red carpet at the Emmy’s this year, she actually threatened to kill a reporter for publishing gossip articles about her and her private love life with Laguna Beach actor Stephen Colletti.

Apparently she was pretty heated. At one point, her publicist even had to interrupt her and say, “Not on the red carpet.”