Prince William expressed his shock and sadness Saturday at the news of the death of his former nanny's stepson in the New Year's truck attack in New Orleans that killed 14 people and wounded dozens more.

London's Metropolitan Police confirmed Saturday that they are supporting the family of 31-year-old Edward Pettifer, including helping them through the process of returning his body to the U.K. Pettifer was from west London.

In a statement on social media, the Prince of Wales said he and his wife, Catherine, were "shocked and saddened by the tragic death of Ed Pettifer. Our thoughts and prayers remain with the Pettifer family and all those innocent people who have been tragically impacted by this horrific attack."

Pettifer was the stepson of Tiggy Legge-Bourke, who was the nanny for both William and his brother, Prince Harry, between 1993 and 1999, which included time after the death of their mother Princess Diana in 1997. Legge-Bourke, who is also known as Alexandra Pettifer, was regularly photographed with Diana.

British media also reported that King Charles is said to be deeply saddened by the news and that he has sent his condolences to Pettifer's family.

In a statement, Pettifer's family said they were "devastated at the tragic news of Ed's death" and described him as "a wonderful son, brother, grandson, nephew and a friend to so many."

"We will all miss him terribly. Our thoughts are with the other families who have lost their family members due to this terrible attack," the family added.

The U.K.'s Foreign Office also said it was supporting Pettifer's family and was in contact with U.S. authorities.

Authorities say 14 people were killed and about 30 were injured in the attack early Wednesday by Shamsud-Din Jabbar, a former U.S. Army soldier who posted several videos on his Facebook hours before the attack previewing the violence he would unleash and proclaiming his support for the Islamic State militant group. The coroner's office listed the cause of death for all 14 victims as "blunt force injuries."

Jabbar, 42, was fatally shot in a firefight with police at the scene of the deadly crash on Bourbon Street, famous worldwide for its festive vibes in New Orleans' historic French Quarter.