As has been reported earlier, the terrorist attack took place yesterday during an evening prayer held to mark the birthday of the Prophet Muhammad. Some 15,000 people belonging to the Sunni organization Jamaat-e-Ahle Sunnat had gathered at a city square after working hours. Several leaders of that organization, which has a massive following in Pakistan, have been reported as killed.
Security measures have been intensified in Karachi, the streets are being patrolled round-the-clock to prevent new disorders and protests against the bombings, shops and restaurants have been closed and sales of petrol at gas stations suspended.
A three-day mourning has been declared in the city, and all schools closed.