Showbiz
Rex Features
The actor was caught on security camera getting "hot and heavy" with a mystery female at London's Soho Hotel, according to The Mirror.
However, Hartnett, who is currently starring in Rain Man at London's Apollo theatre, denied that the incident took place.
He told This Morning: "It's rubbish. The paper said it was 'rumoured' I was caught on CCTV.
"But how can you have a rumour about a video? It would be on the internet now."
More: Josh Hartnett, Showbiz
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