Prince William and Kate sign book of condolences for Orlando victims at US Embassy

The Duke and Duchess of Cambridge signed a book of condolences for those killed and injured in the nightclub shooting in Orlando on a visit to the US Embassy on Tuesday (June 14). The royals looked sombre while meeting Matthew Barzun, the US Ambassador in London, before adding their comments to the book.

After signing, TRH spoke with reps from the US embassy's LGBT network GLIFAA. As a mark of respect Kate wore a knee-length black and white dress teamed with a cropped black blazer.

Their message read: "With our deepest condolences and with our thoughts and prayers to all those affected. William, Catherine."

On Sunday 49 people were shot dead at a gay nightclub in Orlando, in what American authorities are calling the worst terror attack since 9/11.

TAP TO VIEW GALLERYPrince William signing a book of condolencesPrince William and Kate sign the book of condolences at the US embassy

Along with the 49 fatalities it's thought that at least 53 people were left injured from the attack by Omar Mateen. President Obama said of the horrific events on Sunday: "We know enough to say that this was an act of terror and act of hate."

Kate and William's visit to the US Embassy comes after the Queen paid tribute to the victims on Monday. Her Majesty said: "Prince Phillip and I have been shocked by the events in Orlando. Our thoughts and prayers are with all those who have been affected."

Queen Letizia and King Felipe VI of Spain have also paid their respects. Together they visited the US Embassy in Madrid to sign the book of condolences in the presence of the US Ambassador in Spain, James Costos.

US ambassador is cheek greeted by Queen Letizia Queen Letizia and King Felipe VI greet the US ambassador in Spain

According to Spanish newspaper La Vanguardia, Queen Letizia has said the attack was one "against all principles" and such tragic violence will only be combatted by "working together".

On Monday the world united in vigils, with thousands gathering in cities across America, and in the UK, Germany, Australia and France.

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