Hyderabad: The historic ‘Bibi-ka-Alam’ procession passed off peacefully in the old city of Hyderabad amid tight security as solemnity and mourning marked ‘Yaum-e-Ashura’ on Sunday. Thousands of people participated in the procession, which started from Bibi Ka Alawa in a traditional manner and concluded at Chaderghat on the banks of the Musi River after passing.