Seeking information regarding the French GIGN paratroopers at the Grand Mosque, Mecca, Saudi Arabia, circa November, 1979.

Like most else, I read and hear conflicting material regarding this campaign. For example, I read that there was an "instant" type of conversion process to allow "infidels" into the holy city of Mecca and the Grand Mosque.

Any information on the organization and function of GIGN appreciated also.

Thank you in advance.