Dhaka, Nov. 12 -- Twelve people were killed while 20 others were injured in a suicide blast outside a court in Islamabad on Tuesday, a security official confirmed.

According to the official, the explosion took place outside a district court in Islamabad's G-11 sector, saying the blast affected mostly passersby standing nearby at the time of the incident.

So far, no group has claimed responsibility for the attack. However, the official said the blast had been carried out by the Pakistani Taliban or Tehreek-e-Taliban Pakistan (TTP) outfit, which the military frequently describes as "Indian-sponsored" and "Fitna-ul-Khawarij."

"The bodies of 12 people killed in the explosion have been shifted to Pakistan Institute of Medical Sciences (PIMS) ...