Another tragic day for the people of France who wake up in the aftermath of a horrifying suspected terror attack in which at least 84 people including children have been killed.

The late night attack happened in Nice along the Promenade des Anglais seafront where crowds had gathered to celebrate Bastille Day on Thursday (July 14).

A lorry loaded with weapons and hand grenades is believed to have driven at high speed into revellers watching a fireworks display at around 10.30pm.

People who are concerned for the whereabouts of loved ones who may be holidaying in France or have family and friends that live in Nice can try to find them in a number of different ways.

Facebook has activated a safety check feature – The Attack in Nice, France – to allow users who are at or near the site of the attack to let friends and family on their network know they are safe.

The local hospital CHU de Nice has also released a contact number for worried families to get in touch on ++44 04 93 72 22 22.

People have also taken to Twitter where a special account @urgencesnice has been set up and is tweeting pictures of people who are still missing.

The aftermath of the Nice attack.
The aftermath of the Nice attack.

Foreign secretary Boris Johnson has said the Nice terror attack is 'appalling'.

Mayor of London Sadiq Khan tweeted a message of support to the victims of the horrific attack.

The Foreign Office has stated on its website: “We are in touch with the local authorities and seeking more information following an apparent attack on Bastille Day celebration in Nice.

“If you are in the area follow the instructions of the French authorities who are at present advising people to stay indoors at this time.”

The emergency number in France is 112.

The killer who was shot dead by police is reported to be a 31-year-old French citizen born in Tunisia.

It is believed he was known to police but not on a terror watch list.

A number of terror attacks have taken place across Europe including the Brussels attack in March and the Paris attacks in November 2015.