Antoine de Massy, cousin of Prince Albert, found dead in Monaco

• Antoine de Massy, 29, was found dead in a park in Monaco's Larvotto district.
• A Ukrainian man has been charged in connection with de Massy's death.
• Monaco authorities have detained a suspect and opened an investigation.
• The incident occurred on Sunday, with the suspect's detention announced on Monday.
• De Massy's body was discovered along Boulevard du Larvotto.