National Investigating Agency, NIA, has started probe into the blast outside Delhi High Court premises that left 11 people dead and 76 injured. A 20 member team headed by a DIG is conducting the investigations. A massive manhunt and combing operation has been launched to bring the perpetrators of the blast to the book. Delhi Police has released the sketches of the suspects based on the description given by the eye witnesses. The NIA Chief Sharad Chandra Sinha has said that the agency is probing the reported claim of Harkatul Jehadi Islami for the blast.