Union Home Secretary RK Singh confirmed that nine people have died in the explosion. UK Bansal, Secretary (Internal Security) in the Ministry of Home Affairs, said that 
the explosive device was kept in a briefcase. He said that the blast was well planned and of high intensity.
The injured have been rushed to All India Institute of Medical Sciences (AIIMS), Jaiprakash Narayan Hospital and Ram Manohar Lohia Hospital with some of them reportedly in a critical condition.
Bom squad, National Security Guard (NSG) and National Investigation Agency (NIA) teams have reached the blast site. NSG Director General Rajen Medhekar said that ammonium nitrate has been used in the blast.
“Whatever we could gather from the blast investigations is that it is an IED (improvised explosive device) with ammonium nitrate. We are working with the Delhi Police to get details,” said Medhekar.
The Delhi Police have cordoned off the area. Gate no. 5 of the Delhi High Court is where the passes are made for the litigants and the explosion happened outside the reception.
Police officials said that about 100 to 200 people were waiting in queue to get passes for entry into the court complex.
Forensic experts have reached the site and are examining forensic evidence to find out the nature of the blast. Fire tenders and ambulances have also reached the blast site.
This is the worst terror attack in the national capital since the triple blasts on September 13, 2008 in which 25 people were killed. On September 13, 2008 serials blasts had rocked Karol Bagh, Connaught Place and Greater Kailash in the capital in which over 150 people were injured.
Terrorists want to destabilise country: PC
Our parliamentary correspondent adds that Union Home Minister P Chidambaram made an statement in the Lok Sabha on the blast saying there was still no evidence to link any terror group with the Delhi High Court blast
“It is not possible to say who is behind the blast at this point. The Government condemns this terror blast. Delhi has been a target of the terrorists. The group has not been tracked. The objective of the terrorists is to destabilise the country,” said Chidambaram said in the Lok Sabha on the terror strike.