<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.ikiwa mashambulizi haya yatathibitishwa kuwa mashambulizi ya kigaidi, basi yatakuwa mashambulizi mabaya zaidi kushuhidiwa tangu yale ya septemba 11 mwaka 2001  <response>: if the investigation confirms the massacre was inspired by islamic extremism, it would be the deadliest such terrorist attack on us soil since september 11, 2001. 