Harrison Ford surprised crowds at the Comic-Con convention on Saturday by appearing in handcuffs - shortly after a man was arrested for allegedly stabbing another fan at the San Diego, California event.

The handcuffed actor was led onstage by two security guards and given a standing ovation from the 6,000-strong audience at the sci-fi and comic book gathering.

The "Star Wars" legend, who was promoting his upcoming movie "Cowboys & Aliens," seemed surprised by the warm welcome, telling fans, "I just wanted to make a living as an actor. I didn't know about this."

Ford's stunt is believed to have been in reference to an earlier incident in which two men fought while waiting for the "Cowboys & Aliens" panel discussion.

The victim was taken to hospital with a minor cut around his eyelid while the other was arrested on suspicion of assault with a deadly weapon, reports the Associated Press. The fight caused a 45-minute delay.

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