A look at some of the major attacks in Pakistan in recent years:
_ May 13: A pair of Taliban suicide bombers attack paramilitary police recruits in Shabqadar, killing 80 in retaliation for the U.S. raid that killed Osama bin Laden.
_ Nov. 5: A suicide bomber strikes a Sunni mosque in Darra Adam Khel in northwestern Pakistan, killing at least 67 during Friday prayers.
_ Sept. 1: A triple Taliban suicide attack on a Shiite Muslim procession kills 65 in the southwestern city of Quetta.
_ July 9: A pair of suicide bombers kills 102 people in the Mohmand tribal region.
_ July 2: Twin suicide bombers attack Pakistan's most revered Sufi shrine in the eastern city of Lahore, killing 47 people.
_ May 29: Two militant squads armed with hand grenades, suicide vests and assault rifles attack two mosques of the Ahmadi minority sect in Lahore, killing 97.
_ March 13: Two suicide bombers targeting army vehicles in Lahore kill more than 55 people.
_ Jan. 1: A suicide bomber drives a truckload of explosives into a volleyball field in Lakki Marwat district in the northwest, killing at least 97 people.
_ Dec. 28: Bomb blast kills at least 44 at a Shiite procession in southern city of Karachi.
_ Dec. 7: Two bombs kill 48 at a market in eastern city of Lahore, while a suicide bomber kills 10 people outside a Peshawar court.
_ Oct. 9: Suicide car bomb in busy market area in Peshawar kills 53.
_ May 27: A suicide car bomber targets police and intelligence offices in the eastern city of Lahore, killing about 30 people.
_ March 27: A suicide bomber demolishes a packed mosque near the northwestern town of Jamrud, killing about 50.
_ March 3: Gunmen attack the Sri Lankan national cricket team in Lahore, wounding several of the players and killing six policemen and a driver.
_ Sept. 20: A suicide truck bomb kills at least 54 as it devastates the Marriott Hotel in Islamabad.
_ Aug. 21: Suicide bombers blow themselves up at two gates of a weapons factory in the town of Wah, killing at least 67 people.
_ Dec. 27: Former Prime Minister Benazir Bhutto and 20 other people are killed in a suicide bombing and shooting attack in Rawalpindi.
_ Oct. 18: Suicide bombing aimed at Bhutto kills some 150 people in Karachi during celebrations welcoming her home from self-exile.
_ July 3-11: An eight-day standoff between security forces and militants inside the compound of the Red Mosque, or Lal Masjid, kills 102 people.