 Some have also suspected organized domestic Shiite involvement in the Hajj riots in Mecca in July 1987 in which more than 400 people died after Saudi police cracked down on demonstrating Iranian pilgrims.Questions also shroud the June 1996 Khobar Towers bombing, which was officially blamed on the Hizbollah of the Hijaz.The group may have wanted to assert its disapproval of the 1993 reconciliation between the Saudi Government and the OIR, and may have received operational assistance from the Lebanese Hezbollah.