Eighteen year old ‘Heroes’ star Hayden Panettiere allegedly threatened to kill an US Weekly reporter who ran a story claiming that she had broken up with on/off again boyfriend Stephen Colletti.

“It was the unbreakable Hayden Panettiere who threatened to “kill” a staffer from Us Weekly over something she wrote about her in a recent issue,” says a TV Guide reporter who witnessed the melee.

”Just when it looked like Hayden was about to pull a Sylar on said reporter’s skull, her quick-thinking publicist grabbed her and scolded, “Not on the red carpet.” It was a classic Hollywood moment.”