Pakistan, July 6 -- Thousands of Shi'ite Muslims gathered in Karbala, Iraq on Sunday to mark Ashura - the most sacred day in the Shi'ite Islamic calendar - amid strict security measures across the city.

Worshippers from across the country participated in religious rituals held at key sacred sites. The ceremonies began early in the morning, drawing large crowds who filled the streets to commemorate the martyrdom of Imam Hussein.

Men marched in processions, beating drums and performing self-flagellation with steel chains. This act of mourning symbolises grief and solidarity with the sacrifice of Imam Hussein, the grandson of Prophet Muhammad (PBUH).

Ashura is observed on the 10th of Muharram in the Islamic lunar calendar. It marks the da...