Many of the hostages and terrorists (including all of the suicide bombers) were anesthetized, but some terrorists donned gas masks and thus were able to avoid the effects of the gas.
Paljud neist (kaasaarvatud kõik enesetapupommitajad) uimastati, aga osad terroristid kasutasid gaasimaske ning seetõttu mõju neile puudus.