A wave of suicide bombings, commando-style raids and shootings blamed on Islamist extremists have left around 180 people dead in Pakistan so far this month.
Herewith a timeline of attacks in the past 16 days:
October 20: Twin suicide blasts tear through Islamabad's International Islamic University, killing up to five people as well as the bombers.
October 16: A suicide car bomb rips through a police investigation bureau killing 11 people and wounding 13 others in the northwest city of Peshawar.
October 15: Gunmen armed with suicide vests and grenades attack three police buildings simultaneously in the eastern city of Lahore and bomb a northwest station, killing 39 people. A car bomb at a residential building for government employees in Peshawar kills a child.
October 12: A suicide bomber rips through a market as a paramilitary convoy passes in Shangla, a district neighbouring the northwest Swat valley and the target of a recent anti-Taliban offensive. About 45 people, mainly civilians, are killed. Tehreek-e-Taliban Pakistan (TTP) claims responsibility.
October 10/11: Ten militants stage an audacious attack on army headquarters in Rawalpindi, the garrison town adjoining Islamabad, with 23 people killed and 39 hostages freed by troops. The dead included 11 troops, three hostages and nine attackers. TTP claims responsibility.
October 9: A suicide car bomber kills 52 civilians and wounds more than 100 in a crowded market in northwest city Peshawar. It is the sixth attack in four months in the city, near the tribal belt on the Afghan border where tens of thousands have fled a feared offensive against the Taliban and Al-Qaeda.
October 5: Five UN World Food Programme workers are killed when a suicide bomber walks into their office in Islamabad and blows himself up, dressed in military uniform. Four Pakistani workers and one Iraqi are among the dead. The TTP claims responsibility for the attack.