King Felipe VI and Queen Letizia of Spain paid their respects to the victims of the Nice attack by visiting the residence of Yves Saint-Geour, the French ambassador to Spain on Friday 15 July.
The Spanish royals appeared downcast as they expressed their condolences to the 84 people who lost their lives after 31-year-old French-Tunisian attacker Mohamed Lahouaiej Bouhlel ploughed through a busy Nice street during Bastille Day celebrations on 14 July.
The married couple of 12 years – who have two daughters together, Leonor, Princess of Asturias
Infanta Sofía of Spain – spent time speaking with Saint-Geour about the tragic terror attack which left dozens of people, including 12 children, lying dead on the street.
The attacker, driving a lorry, mowed down a crowd on the famous Promenade des Anglais that gathered to watch a firework display. Bouhlel then opened fire on people on the street before being shot dead by police. There are 50 injured people, with 18 in a critical condition.
Letizia, 43, reflected her sombre mood through her choice of outfit, wearing a black and white houndstooth blouse by Caroline Herrera which she debuted in March earlier this year, and some black tailored trousers with court shoes. She wore her hair in a straight style and showcased a subtle yet fresh make-up look featuring peach lip gloss and blusher.
Felipe and Letizia join a league of world leaders that have offered their commiserations in the wake of the attack, including the likes of US President Barack Obama, who released a statement.
It reads: "On behalf of the American people, I condemn in the strongest terms what appears to be a horrific terrorist attack in Nice, France, which killed and wounded dozens of innocent civilians. Our thoughts and prayers are with the families and other loved ones of those killed, and we wish a full recovery for the many wounded.
"I have directed my team to be in touch with French officials, and we have offered any assistance that they may need to investigate this attack and bring those responsible to justice. We stand in solidarity and partnership with France, our oldest ally, as they respond to and recover from this attack.
"On this Bastille Day, we are reminded of the extraordinary resilience and democratic values that have made France an inspiration to the entire world, and we know that the character of the French Republic will endure long after this devastating and tragic loss of life."
UK prime minister Theresa May also issued a statement on the Nice attack. She said: "I am shocked and saddened by the horrifying attack in Nice last night. Our hearts go out to the French people, and to all those who have lost loved ones or been injured.
While the full picture is still emerging, it seems that at least 80 people are feared dead and many others have been injured. These were innocent victims enjoying a national celebration with their friends and families.
"We are working urgently to establish whether any British nationals were caught up in the attack. Our ambassador is travelling to Nice today with consular staff and they will be doing all they can to help anyone affected."
The Houses of Parliament will be illuminated in the red, white and blue of the French flag tonight in solidarity with France.
Stay updated with the Nice attack with IBTimes UK's live blog.