London, England (CNN) -- London police said Wednesday homicide detectives are investigating the murder of a Saudi national whose body was found in a hotel.
The body of the 32-year-old man was found Monday in a third-floor room of the Landmark hotel, which is next to London's Marylebone train and Tube station, the police said.
The man, whose name was not released, had been strangled and suffered a head injury, police said.
"Officers believe they know the identity of the deceased, who is from Saudi Arabia, but await formal identification before releasing his name," police said in a written statement. "Inquiries to trace his next of kin are under way."
Police said they arrested a 33-year-old man Tuesday in connection with the death, and he remained in custody Wednesday.
British media outlets quoted unnamed sources as saying the arrested man was connected to the Saudi royal family, which has thousands of members.
A spokesman for the Saudi Embassy in London said it had no information about the case.