Death of Antoine de Massy: suspect charged in Monaco
By Zak Jackson, MonacoViews Editorial
A Ukrainian national has been charged with involuntary homicide after the death of Antoine de Massy, a second cousin of Prince Albert II.
On Monday 26 October 2026, police took a Ukrainian national into custody following the discovery of the body of Antoine de Massy in Monaco. De Massy was a second cousin of Prince Albert II, though not a working member of the princely family.
Two days later, on Wednesday 28 October, a judge formally charged the man with involuntary homicide and failure to assist a person in danger, before ordering his pre-trial detention. The nature of the charges suggests investigators believe the death may be linked to a failure to act rather than a direct assault, though the full circumstances have not been made public.
Monaco's prosecutor's office has not disclosed further details on the relationship between the two men or the location where the body was found. The case has drawn particular attention in the Principality given de Massy's family ties to the ruling house, even though his role was largely private.