A member of the Saudi Royal Family who is being questioned about the death of an aide who was found strangled in a London hotel does not have diplomatic immunity.

The man is said to have told police that he was a prince, but investigations abroad have led officers to believe that he is a minor member of the House of Saud.

He was arrested on Monday night, hours after his aide’s body was found in a suite at the Landmark London hotel in Marylebone, where rooms can cost almost $800 a night.

A post-mortem examination found that the victim, aged 32, had been strangled and suffered head injuries.

Wednesday morning detectives from the Metropolitan Police Service’s Homicide and Serious Crime Command were granted another 36 hours to question the 33-year-old man by Westminster Magistrates’ Court.

It is understood that the suspect cannot claim diplomatic immunity from prosecution. Under the 1961 Vienna Convention, only senior royals and diplomats may qualify and a suspect’s government can waive immunity.

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