A live outdoor television broadcast from the Cannes Film Festival was briefly interrupted when what sounded like gunfire sent the crew and audience running for cover.
Actors Christoph Waltz and Daniel Auteuil were among guests being interviewed on the programme 'Le Grand Journal' when what sounded like gunfire rang out.
Television footage shows Auteuil and Academy Award winner Waltz - a member of the Cannes festival jury - scrambling from the seaside stage with dozens of others as a someone was heard saying "there's someone shooting."
When Friday's programme carried on a few minutes minutes later, host Michel Denisot said the noise had been caused by blank rounds. There were no reports of injuries.
A man was detained by police with a starter's pistol, a pocket knife and a plastic grenade.
French police say thieves raided the hotel room of a representative of Swiss jeweller Chopard and made off with jewels.Read the full story ›
Swiss jeweller Chopard has issued a statement clarifying earlier media reports surrounding the robbery of jewels from a Cannes, where the annual film festival is taking place:
An employee of the Chopard house has been the victim of a robbery last night, in their hotel room while they were not on the premises.
They is currently a police investigation underway but we can let you know the value of the pieces stolen is far lower than that which is circulating in the media.
The jewellery stolen is not part of the collection of jewels worn by actresses during the film festival.
Thieves stole over $1 million worth of jewellery from the Novotel hotel in the centre of Cannes - where the annual film festival is taking place.
Swiss jeweller Chopard has loaned luxurious jewellery to celebrities in Cannes for the film festival, including actress Julianne Moore, model Cara Delevingne and singer Lana Del Rey.
It is unknown whether the jewels in the pictures below were among the items stolen by thieves.
Thieves who stole jewellery worth $1.2 million from a hotel in Cannes broke into the room of a Swiss jeweller Chopard employee, according to AFP.
The robbers reportedly opened a safe in the room and made off with the jewels, which were set to be loaned to celebrities who are in the French town for the annual film festival.
Swiss luxury watchmaker and jeweller Chopard is one of the official sponsors of the festival and they redesigned the Palme d'Or award, which is given to the director of the best feature film.
Jewellery worth more than $1 million (£650,000) has reportedly been stolen from a hotel in Cannes - where the annual film festival is currently taking place.
The jewels were set to be loaned to celebrities who are in the French Riviera town, according to reports.
Emma Watson has come a long way since the days of Harry Potter, the actress plays a celebrity-obsessed teenager who turned to crime in her latest film.
Directed by Sofia Coppola, The Bling Ring is based on a real-life gang fixated by glamour, who stole $3 million of luxury goods from celebrities including Paris Hilton and Lindsay Lohan.
Watson said: "I enjoy the chance to transform into new roles and work with new creative people," she added, "Harry Potter seems like such a long time ago."
The Harry Potter star, who dons a Los Angeles accent in the film, said she prepared for the role by watching reality TV like Keeping up with the Kardashians and The Hills"
The film received welcome reviews after its first screening at Cannes Film Festival yesterday.
Leonardo DiCaprio told Daybreak's Kate Garraway that he has looked on his experience of filming The Great Gatsby as "an incredible opportunity that I don't want to squander and I look at it as an incredible gift."
When asked if he could identify with his character Jay Gatsby's party lifestyle he said: "I have been to some parties in my life and I have been to premieres but thank God that is not my life 24 hours a day, thank God!"
Leonardo Di Caprio has emphasised the importance of The Great Gatsby novel in the United States.
Speaking at the Cannes Film Festival he said: "Gatsby is compulsory reading in secondary school.
"People today still try to dissect this novel, to interpret every line, it's a kind of endless quest. We wanted to re-shape the novel's characters. It is so exciting to work with a text of this calibre."