10 children are among 84 people killed in the terror attack during Bastille Day celebrations in Nice in France.
A truck was driven through people on the packed waterfront after a fireworks display, and the driver was later shot dead.
The Department of Foreign Affairs says it has particular concerns for the welfare of one Irish citizen, and the Irish Embassy in France is following this up urgently.
French people living in Ireland have been reacting to news of the atrocity.
Tralee-based Christophe Favaudon, who owns Chez Christophe Restaurant on Courthouse Lane, says he’s been thinking about family at home.
Mr Favaudon says as a child he would also have gone out to celebrate Bastille Day with his family, like those caught up in the horrific events were doing in Nice last night.
He says the most frightening thing about the attack is that he believes terrorists will strike again and even a well-trained police force can’t stop them.