Because of His prominence in the defense of the Báb's cause, Bahá’u’lláh was arrested and brought, in chains and on foot, to Teheran. Protected in some measure by an impressive personal reputation and the social position of His family, as well as by protests which the Bábí pogroms had evoked from Western embassies, He was not sentenced to death, as influential figures at the royal court were urging. Instead, He was cast into the notorious Siyah-Chal, the "Black Pit", a deep, vermin-infested dungeon which had been created in one of the city's abandoned reservoirs. No charges were laid but He and some thirty companions were, without appeal, kept immured in the darkness and filth of this pit, surrounded by hardened criminals, many of them under sentence of death. Around Bahá’u’lláh's neck was clamped a heavy chain, so notorious in penal circles as to have been given its own name. When He did not quickly perish, as had been expected, an attempt was made to poison Him. The marks of the chain were to remain on His body for the rest of His life.