On 21 August 2004 a group of terrorists conducted vicious grenade attacks on a rally held by the opposition party Awami League including leader Sheikh Hasina. Prominent leaders including Ivy Rahman were killed in the attack, and Hasina herself sustained injuries to her ears. A total of 13 grenades were blasted and 24 people killed. The Awami League called for a nationwide hartal (general strikes) on 23 and 24 August 2004 following the incident. Begum Khaleda Zia, then Prime Minister of Bangladesh condemned the attacks, and also vowed a strong probe to catch the culprits. But they provided misleading information. Only after the current government tenure ended a neutral probe formed and revealed that Tarique Rahman son of Prime Minister Khaleda Zia along with the then Home Minister Lutfuzzaman Babar had masterminded the attack. But BNP has denied the allegations.