A man has been charged with involuntary manslaughter over the death of Prince Albert of Monaco's cousin.
Antoine de Massy, 29, a first cousin once removed of the head of the Principality, fell to his death after leaving a nightclub over the weekend.
The 42-year-old man, identified as Ukrainian and a resident of Monaco after being seen in CCTV footage, was also charged with failing to assist a person in danger.
He had been filmed leaving the Sass' Cafe club alongside Antoine at 3 am.
© Instagram / antoinedemassyMonaco's prosecutor general, Stéphane Thibault, said he had been remanded in custody after refusing to answer questions.
Stéphane said in a statement that the acts "may have been committed at different times".
Monaco royal Antoine de Massy found dead – what we know so far
Antoine was found on Sunday after his family alerted authorities when he didn't show for a family lunch.
He was discovered in a park below Boulevard du Larvotto, and is believed to have fallen 13 feet into the garden.
Video footage had shown him in an inebriated state leaving Sass' Cafe in the early hours of Sunday morning.
© Instagram / @antoinedemassyA post-mortem examination into the cause of death and an investigation are ongoing.
Antoine was a tech entrepreneur who had spent much of his life in Miami, studying international relations and affairs at Florida International University.
A memorial has been set up in his memory, close to where his body was found, including flowers, candles and the principality's flag.
There are also tennis balls – a reference to his love of the sport – and a framed photograph.
How is Antoine related to the Monaco royal family?
Antoine was the son of Cécile Gelabale and Christian de Massy, the first cousin of Prince Albert of Monaco.
His grandmother, Princess Antoinette, was the older sister of Prince Rainer III and Prince Albert's aunt.
Albert and his wife, Princess Charlene, announced news of Antoine's death on Monday.
© GettyReleasing a poignant statement, they said: "Their Serene Highnesses Prince Albert II and Princess Charlène were saddened to learn of the death of Antoine de Massy, aged 29, the grandson of Princess Antoinette, the elder sister of Prince Rainier III.
"A keen tennis player, he was part of a family history closely linked to the sport in the Principality.
"Their Highnesses share in the grief of his family and loved ones and offer them their sincere condolences at this painful time."
