A look at some recent major attacks in Pakistan or blamed on Pakistan-based militants:
May 27, 2009: A suicide car bomber targets buildings housing police and intelligence offices in the eastern city of Lahore, killing about 30 and injuring more than 100.
March 30, 2009: Gunmen armed with rifles and hand grenades attack a police academy on the outskirts of Lahore, killing at least 11 officers and wounding dozens.
March 27, 2009: A suicide bomber demolishes a packed mosque near the northwestern town of Jamrud, killing about 50 people and injuring scores more.
March 3, 2009: Gunmen attack the Sri Lankan national cricket team in Lahore, wounding several players and killing six policemen and a driver.
Nov. 26-28, 2008: Ten attackers, allegedly from Pakistan, kill 164 people in a three-day assault on luxury hotels, a Jewish center and other sites in Mumbai, India.
Sept. 20, 2008: A suicide truck bomb kills at least 54 and wounds more than 250 and devastates the Marriott hotel in Islamabad.
Sept. 6, 2008: A suicide car bombing kills at least 35 people and wounds 80 at a police checkpoint in Peshawar.
Aug. 21, 2008: Suicide bombers blow themselves up at two gates of a weapons factory in the town of Wah, killing at least 67 people and wounding at least 100.
March 11, 2008: Suicide bombs rip through seven-story police headquarters and a house in Lahore, killing at least 24 people and wounding more than 200.
Feb. 29, 2008: Suicide bomber strikes funeral of slain police officer in the Swat Valley, killing more than 40 people and wounding at least 60.
Jan. 10, 2008: Suicide bomber blows himself up among police guarding the High Court in Lahore, killing 24 people and wounding scores more.
Dec. 27, 2007: Former Prime Minister Benazir Bhutto and 20 other people are killed in a suicide bombing and shooting attack in Rawalpindi, just south of the capital.