Tehran had earlier contacted the Pakistan government to guarantee the security of their Consulate, because the Iranians knew that ISI officers had driven into Mazar with the Taliban. The Iranians had thought that Dost Mohammed's unit had been sent to protect them so had welcomed them at first. ... At first the Taliban refused to admit the whereabouts of the diplomats but then as international protests and Iranian fury increased, they admitted that the diplomats had been killed, not on official orders but by renegade Taliban. But reliable sources said that Dost Mohammed had spoken to Mullah Omar on his wireless to ask whether the diplomats should be killed and Omar had given the go-ahead."