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At least 18 people were injured when a bonfire exploded at a carnival held in northern France.
The blast occurred at the end of the Yellow Carnaval in Villepinte, north-east of Paris, on Saturday afternoon.
Video posted on social media showed the bonfire blowing up seconds after being ignited, sending debris flying.
A mother and her child are among those seriously injured and the town's mayor was also hurt, Le Parisien newspaper reported.
Agence France-Presse said an initial investigation had been opened by prosecutors, but the cause of the explosion was not yet known.
A police source told the BFM news network that the explosion may have been caused by the petrol used to help start the fire.
The blast occurred at the end of the Yellow Carnaval in Villepinte, north-east of Paris, on Saturday afternoon.
Video posted on social media showed the bonfire blowing up seconds after being ignited, sending debris flying.
A mother and her child are among those seriously injured and the town's mayor was also hurt, Le Parisien newspaper reported.
Agence France-Presse said an initial investigation had been opened by prosecutors, but the cause of the explosion was not yet known.
A police source told the BFM news network that the explosion may have been caused by the petrol used to help start the fire.