The brother of Camilla, Duchess of Cornwall, has died after sustaining a serious head injury following a fall in New York, British royal officials said Wednesday.

Clarence House said Mark Shand, 62, died in the hospital Wednesday after falling late Tuesday.

It said in a statement that Camilla, her husband Prince Charles, and all of her family members are "utterly devastated by this sudden and tragic loss."

"Mark Shand was a man of extraordinary vitality, a tireless campaigner and conservationist whose incredible work through the Elephant Family and beyond remained his focus right up until his death," it said.

Mr. Shand was chairman of the elephant-conservation charity and is known for his work as a travel writer and conservationist. He is the author of several books, including Elephant Tales and River Dog: A Journey Down the Brahmaputra.

He was in New York for a charity auction at Sotheby's. - AP