Leonardo DiCaprio and Rihanna: Actor uses French privacy law to prevent publication of pictures of him 'kissing singer' in Paris nightclub

Leonardo DiCaprio arrives at the Premiere Of 20th Century Fox And Regency Enterprises' 'The Revenant' at TCL Chinese Theatre on 16 December, 2015 in Hollywood, California (Frazer Harrison/Getty Images)

Leonardo DiCaprio has reportedly used French privacy law to prevent pictures of him kissing Rihanna in a Paris nightclub from being published.

The actor and singer appeared to be kissing when they were photographed on Sunday, fuelling rumours they were dating.

A photo agency has offered the pictures, taken at L'Arc nightclub, to a number of publications in Britain, the Daily Mail reports.

Mr DiCaprio's lawyer has sent out a warning, saying he objected to the images being published and that he had a right to privacy under French law.

“Rihanna and Leo were really going for it," a witness told The Sun. "They were passionately snogging and didn’t seem to care if anyone saw.

“They were using tongues so there was no mistaking it for a friendly smooch.”

However, The Mirror reports a "source close to Leo" told the paper: "They're just friends."

Unnamed sources told TMZ the rumours are caused by a bad angle in the photo.

Leonardo DiCaprio was in Paris to promote his new film The Revenant, while Rihanna was filming her new film Valerian.