Militants groups in Pakistan

1.Lashkar-e-Omar:
Lashkar-e-Omar (The Army of Omar) is a terrorist organisation which is believed to have its members derived from 3 organizations, Harkat-ul-Jihad-al-Islami (HuJI), Lashkar-e-Jhangvi (LeJ) and Jaish-e-Mohammed (JeM).
The main terrorist activities for which it has been accused are:
• Attack on a church in Bahawalpur in Punjab on October 28, 2002, resulting in 18 deaths and 9 injuries.
• The group, was allegedly involved in the March 17, 2002 grenade attack on a church in the heavily guarded diplomatic enclave in Islamabad in which five persons, including a US diplomat's wife and daughter, were killed and 41 others injured.
• LeO was reportedly involved in the suicide bombing outside the Sheraton Hotel in Karachi on May 8, 2002 and the June 14 attack on the US consulate in Karachi, in which 10 persons, including five women, were killed and 51 others injured.
2.Lashkar-e-Taiba:
Pakistan-based terrorist group, Lashkar-e-Taiba, has survived global sanctions and is poised to move into the political realm thereby strengthening the collective religious extremist groups' move to coalesce as a formidable opposition to the re-emergent civil democratic movement in Pakistan. This coalition of extremist and terrorist elements within Pakistan and the broad trajectory of the Taliban-Al Qaeda relationship in Afghanistan threaten the stability of Pakistan and the region, and risks fueling the export of terrorism across the world. See PSRU Brief 12. Lashkar-e-Taiba, Pakistan Security Research Unit (PSRU)Attacked Mumbai in three different sites.Hotel Taj,Nariman House and Hilton Tower(Oberio Hotel).
3.Sipah-e-Sahaba Pakistan:
Previously known as Anjuman Sipah-e-Sahaba (ASS), this group is thought to be behind most of the attacks on Shiites. It came into prominence following the Iranian Revolution in 1980s. Incidents thought to be caused by this group are as follows:
• October 7, 2004 bomb blasts in Multan that killed 40 people;
• September 21, 2004: Suspected SSP members gunned down at least three members of a Shi'a family in a sectarian attack in Dera Ismail Khan;
• March 2, 2004 More than 45 people killed and over 100 wounded in an attack on Shi'a Muslims in Quetta; and
• It has also been involved in assassinating Iranian diplomats with the most severe being the killing of five Iranian Air Force cadets in Rawalpindi in 1997.