 At the start of his regime many staunch Sunnis were hopeful, because he seemed less tolerant of other faiths than his father had been.At the time of his accession and the elimination of Abu'l Fazl, his father's chief minister and the architect of his eclectic religious stance, a powerful group of orthodox noblemen had gained increased power in the Mughal court.Most notorious was the execution of the Sikh Guru Arjan Dev, whom Jahangir had had killed in prison.