Those attacks were claimed by Lashkar-e-Jhangvi, a Sunni militant group known for its virulent hatred of Shiite Muslims.

NPR: Pakistani Shiites Mourn As Bomb Death Toll Hits 45

Lashkar-e-Jhangvi is a radical Sunni Muslim militant group that has carried out many attacks in Pakistan, especially against minority Shiite Muslims.

WSJ: 3 Die in Attack at Peshawar Court

Sunni militant group Laskhar-e-Jhangvi said it had carried out the bombing, which hit a largely Hazara area of Quetta.

BBC: Angry Hazaras protest in Quetta, 17 Feb