Video shows a woman being forcibly picked up and dragged through a mob of hundreds gathered at national monument Minar-e-Pakistan to celebrate Independence Day.
Sufi Mohammad, who issued an edict calling for a holy war against U.S.-led forces in Afghanistan, has been released.
The militant was also the cousin of the leader of the Pakistani Taliban, which ordered the attack on Malala.
The U.S. president has adopted a tough tone with Pakistan, which has long tried to claim international legitimacy while harboring militants.
Sabri was a famous singer of Qawwali, a type of Sufi devotional music.
The bomber rammed his motorcycle into a police vehicle next to the roadside checkpoint in the Jamrud area.
Group rejects claim that Abu Bakr al-Baghdadi is "caliph."
A literary festival provides a forum for a debate on the future direction of Pakistan.