Complex sentence: Pakistani security forces were placed on high alert as Shia muslims marked the holy month of Muharram, thousands of police and paramilitary forces were deployed in the city for the fear of terrorist attacks on the Ashura procession.
Split into simpler sentences: Pakistani security forces were placed on high alert as Shia muslims marked the holy month of Muharram. Thousands of police and paramilitary forces were deployed in the city for the fear of terrorist attacks on the Ashura procession.