Location Date Description Deaths Injuries Pakistan January 10 January 2013 Pakistan bombings 130 270 Algeria January 16 In Amenas hostage crisis 67+ unknown Pakistan February 16 February 2013 Quetta bombing 110 200 India February 21 2013 Hyderabad blasts, two bomb blasts killed 16 119 United States April 15 Boston Marathon bombings – Two brothers, Tamerlan and Dzhokhar Tsarnev, planted two bombs near the finish line of the Boston Marathon.[59] 3 183 Turkey May 11 Reyhanlı bombings, killed 52 140 United Kingdom May 22 Murder of Lee Rigby[60][61] 2 0 Niger May 23 Battle of Agadez and Arlit. Two coordinated attacks perpetrated by Islamists affiliates targeted the two Niger towns of Agadez and Arlit.