Jersey's Bailiff has released a statement saying he is 'deeply shocked' by the attack on Nice last night.
William Bailhache says it is unknown if anyone from Jersey was involved.
At least 84 people are dead after a lorry drove into crowds during Bastille Day celebrations.
Mr Bailhache has written to the President of France to express 'sympathy and sadness' at the loss of life and injuries suffered.
He added his thoughts are with the families affected by this tragedy.