Members of the royal family in the deeply conservative Islamic kingdom of Saudi Arabia regularly held parties where alcohol, drugs and prostitutes were available, according to leaked U.S. diplomatic cables.

Saudi Arabia practices an austere form of Islam under which alcohol, drugs and unmarried sex are illegal and punishable by prison or flogging.

But documents sourced by WikiLeaks contain allegations by American diplomats of a drunken Halloween party at the Jeddah mansion of a young Saudi prince.

“Behind the Wahhabi conservatism in the streets, the underground nightlife for Jeddah’s elite youth is thriving and throbbing. The full range of worldly temptations and vices are available — alcohol, drugs, sex — but strictly behind closed doors,” reveals the cable, written in November 2009.