Matt Damon killed off a sick report he had plunged to his death from the mountains of California on Thursday - with a late night appearance on TV.

An inaccurate rumor alleging the Ocean's Eleven actor had slipped and fallen off the Palos Verdes Mountains surfaced online on Thursday morning.

However, Damon showed fans he was alive and well during an appearance on The Late Show with David Letterman and laughed off the bogus claim.

He said, "I didn't know (I was dead), but I feel pretty good! I just heard this. It said that I was in the Palos Verdes Mountains; I don't know where this is. The cause (of death) was unknown."

But taking a serious tone, the Hollywood star chastised the pranksters behind the stunt, admitting he was angered by the report because his friends and family could easily have taken the rumor as fact.

He added, "I'm actually really glad I'm on the show because I'd hate to think that one of my friends would read it and think (it's true)... I'm a little bit upset by this because it's a careless, reckless thing to do."

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(This news article provided by World Entertainment News Network)