Followers of Ahl al-Bayt in Yazd city of Iran continue to observe the 10-day mourning of the martyrdom of Imam Hussain (as), the third Shi'a Imam who was martyred along his family and companions by Umayyad caliphate, Yazid son of Mu'awiyah in the 61 year after the Hijrah of the holy Prophet Muhammad (PBUH).