The Pakistani city of Rawalpindi is under a curfew after eight people died in sectarian clashes on Friday.
At least 35 people were injured in clashes that occurred when a Shia procession marking the religious festival of Ashura, coincided with a sermon at a nearby Sunni mosque.
Dozens of shops and a seminary were set on fire.
The BBC reports residents are under orders to stay home until the curfew is lifted at midnight on Saturday. Security forces are patrolling the streets.
Security has been increased ahead of the mourning ceremonies, including the jamming of mobile phone networks.
Ashura commemorates the anniversary of the death of Imam Hussein, the grandson of the Prophet Mohammed.
