There have been a spate of blasts in Nairobi which started on 10 March 2012, where assailants threw grenades at a busy bus station and a blue-collar bar in Nairobi, killing nine and injuring more than 50. On 28 May 2012, 28 people were injured in an explosion in a shopping complex in downtown Nairobi, near Moi avenue. On 21 September 2013, Al-Shabaab-associated militants attacked the Westgate Mall. 67 people were killed.