PARIS (Reuters) -A Parisian shop-owner who helped prevent a masked gang from kidnapping the daughter of a French crypto businessman has been hailed as a hero after he rushed at the attackers with a fire extinguisher.

French prosecutors are investigating after a masked gang tried to kidnap the daughter of a crypto businessman in Paris in what is at least the third violent attack targeting wealthy crypto players and their families in recent months.

A masked gang have tried to abduct the daughter and young grandson of a cryptocurrency chief in Paris, but after a violent struggle they drove off empty-handed. The botched kidnap bid was captured on video by an onlooker in Paris's 11th district,