EntityQ2814776· pop 7· linked from 170 articles20th hijackerSign in to savepossible additional terrorist in the September 11 attacks of 2001ConnectionsAmmar al-BaluchiEntityWaalid bin AttaashEntityAfghanistanCountrySaudi ArabiaCountryMoroccoCountryCubaCountryWashington, D.C.EntityterrorismEntityOsama bin LadenPersonSeptember 11 attacksConceptInternational Standard Book NumberEntityJeddahCityAl-QaedaEntityBBCConceptCNNEntityIraq WarConceptWorld Trade Center (1973–2001)ConceptThe PentagonEntityvisaEntityUnited States Armed ForcesEntityCategoriesSeptember 11 attacks