Prince William and Kate Middleton paid their respects to the victims of the Paris terrorist attacks when they visited the French Embassy in Knightsbridge, London, Tuesday. The Duke and Duchess of Cambridge penned a note and signed their names in a book of condolences, which was created in the wake of Friday’s massacre, the U.K.’s Daily Mail reported Tuesday.

“To all those who have died and were injured in the heartless attacks in Paris, and to all the people in France: Nos plus sincères condoléances,” the royals wrote. “Nos plus sincères condoléances” translates to “our deepest condolences.” Middleton paused to read the message before she signed “Catherine” under William’s signature.

Note Prince William and Kate Middleton wrote a heartfelt message to the victims of the terrorist attack in Paris at the French Embassy in Knightsbridge, London Tuesday, Nov. 17, 2015. Photo: Getty Images

The couple, both 33, spoke with French Ambassador Sylvie Bermann. Middleton asked if Bermann knew anyone affected by the slaughter in Paris; she said she did not. Before they left, William said the tragedy was “truly dreadful.”

Many celebrities have been outspoken since the terrorist attack, including Madonna. She addressed the tragedy at her concert in Stockholm Saturday. “In many ways I feel torn, because it’s like, why am I up here dancing and having fun when people are crying over the loss of their loved ones?” she told the crowd, according to Us Weekly. “However, that is exactly what these people want to do. They want to shut us up. They want to silence us, and we won’t let them. We will never let them.”

Kate Middleton Duchess of Cambridge Kate Middleton, pictured Nov. 17, 2015, signs her name on a note that Prince William (left) wrote in tribute to the victims of the Paris attacks. Photo: Getty Images

"France is at war,” French President François Hollande said Monday. "These attacks were war. It was an attack against our values, against our youth and our way of life.”

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