Dec 21 A suicide bomber killed at least 41 people in a mosque in northwest Pakistan on Friday where a former interior minister was offering Muslim Eid festival prayers with worshippers, officials said.
Here is a chronology showing some of the worst bomb attacks since July:
July 14, 2007 - Suicide car-bomber kills 24 paramilitary soldiers and wounds 29 in North Waziristan.
July 15 - Sixteen people, most of them paramilitaries, are killed in an ambush on patrol in Swat valley in North West Frontier Province (NWFP). Separately, suicide bomber targets police recruiting centre in Dera Ismail Khan in NWFP, killing 29.
July 17 - Suicide bomber kills 16 people outside court in Islamabad where country's suspended chief justice, Iftikhar Chaudhry, was due to speak.
July 19 - Three suicide attacks in a single day in three towns kill at least 52 people.
July 27 - Suicide bomb attack in restaurant near Islamabad's Red Mosque kills 13 people, most of them policemen.
Sept. 4 - Two suicide bombers kill 25 in Rawalpindi.
Sept. 11 - Suicide bomber kills 16 people in northwest Dera Ismail Khan.
Sept 13- At least 15 soldiers killed in suicide bombing in an army canteen near Islamabad.
Oct. 19 - At least 139 people killed by a suspected suicide bomb attack on former Benazir Bhutto as she is driven through Karachi after eight years in exile. The attack is one of the deadliest in Pakistan's history.
Oct. 25 - Suspected suicide bomber kills 21 people, including 17 soldiers, in an attack on an army convoy in the northwestern Swat valley. Nov. 24 - Twin suicide car bomb attacks kill 15 people in Rawalpindi, on the eve of the return of former prime minister Nawaz Sharif from exile in Saudi Arabia.
Dec. 17 - A suicide bomber kills 10 military recruits in the northwestern town of Kohat.
Dec. 21 - A suicide bomber kills at least 41 people in a mosque in northwest Pakistan during Eid festival prayers.
Source: Reuters; (Writing by Nagesh Narayana; Editing by Sanjeev Miglani)