Late on Thursday, a man driving a large truck at high speed mowed down a crowd in Nice, France, during Bastille Day celebrations. The attacker was killed. French President Francois Hollande extended the state of emergency in France for another three months and said the said the attack was of a "terrorist nature."
The news weighed on already-fragile European investor sentiment, which was starting to recover after the installment of a new prime minister in the U.K.
Travel and leisure stocks turned lower on news of the attack. French hotel group Accor closed around 3 percent lower and Air France-KLM was off 1.6 percent. Other airlines such as Easyjet, Ryanair and IAG also closed lower.