Sport unites in support of Nice victims
At least 84 people were killed and up to 200 injured in the French Riviera city as a truck driver ploughed his vehicle into hundreds of people celebrating Bastille Day.
Eyewitnesses claim the driver deliberately zigzagged the vehicle to try and kill as many people as possible during the attack.
The Tour de France continued as planned on Friday, with riders observing a minute of silence at the start of the stage.
British cyclist Chris Froome posted a picture of the French flag on Twitter with a message of support for people affected by the attack.
Thoughts are with those affected by the horrific terror attack in Nice pic.twitter.com/tM6IBN30xE— Chris Froome (@chrisfroome) 15 July 2016
A minute of silence was also held at tennis’ Davis Cup quarter-final in Belgrade, Serbia.
French football champions Paris Saint-Germain also tweeted their condolences.
Le Paris Saint-Germain adresse ses plus profondes condoléances aux familles et proches des victimes à Nice. pic.twitter.com/aTuBnPFh9w— PSG Officiel (@PSG_inside) July 15, 2016
The French flag was flown at half-mast at the British Open Golf Championship, while French golfer Clement Sordet wrote the words, "Pray For Nice" on his cap as he began his second round.
West Ham United FC added a message of support to their midfielder Dimitri Payet's call to Pray for Nice.
Nine-time French Open winner Rafael Nadal tweeted his horror at the events in the southern French city.
Viendo las noticias y horrorizado por lo ocurrido en Niza. Mi apoyo al pueblo francés, todas las víctimas y sus familiares.— Rafa Nadal (@RafaelNadal) July 14, 2016
Real Madrid FC expressed its "solidarity" with the "victims, their families and all of the French people" on the official website, while star winger Gareth Bale called for an end to these types of atrocities.
The mayor of Nice's office identified the attacker as Mohamed Lahouaiej Bouhlel, a French citizen of Tunisian descent.
It is not yet known whether the 31-year-old, who was killed by police at the scene, acted alone, while there has been no claim of responsibility for the attack.