European countries like the UK, Germany and Spain have all indicated they would strengthen security measures following the Bastille Day attack in Nice.

London's mayor said on Friday that the city's security measures are being reviewed. German Federal Police and Spain's acting Interior Minister both say they have tightened border controls with France. Italy will also reinforce security measures following the attack in Nice, which is located about 30 kilometers from the Italian border.

Belgian Prime Minister Charles Michel also announced there will be additional security measures during the country's upcoming National Day.