Concern is growing among families for several groups of British pilgrims who cannot be made contact with, since the stampede that killed more than 700 in Saudi Arabia.
The Muslim Council of Wales said it knew of around 120 people in three groups from Cardiff, Newport and Swansea who were unaccounted for.
Dr Hojjat Ramzy, an imam and director of the Oxford Islamic Information Centre, is one of the many families and friends anxiously awaiting news of their loved ones.
A spokesperson told Sky News other members who travelled to Mecca for haj had made contact to say they were safe but there had been no word from the missing pilgrims, and their phones were not available.
Though the foreign and Commonwealth office (FCO) has not yet confirmed whether any British pilgrims are among the 719 people killed and 863 injured, but a spokesperson said it was "urgently gathering information".
