Police on Tuesday investigated the Red Fort blast as a possible terror attack and zeroed in on a Pulwama doctor, who was driving the car that exploded and had links to a terror module busted with the recovery of explosives mainly from Faridabad.

Dr Umar Nabi is believed to have died in the blast that killed at least 10 people on Monday evening.
On Tuesday, Jammu and Kashmir police took a DNA sample from his mother to establish the connect.
“We have taken the DNA sample in order to match with the parts found at the scene of the blast,” an official said in Srinagar.
The Red Fort blast on a busy Monday evening came hours after eight people, including three doctors, were arrested and 2,900 kg of explosives seized with the uncovering of a “white collar” terror module involving the Jaish-e-Mohammed and Ansar Ghazwat-ul-Hind and spanning Kashmir, Haryana and Uttar Pradesh.
Among those arrested on Monday were Dr Muzammil Ganaie and Dr Shaheen Sayeed, both connected to the Al Falah university in Faridabad, from where 360 kg of ammonium nitrate was recovered.
According to investigators, Shaheen was allegedly leading the Jaish-e-Mohammed’s women recruitment wing in India. She headed the Jamaat-ul-Mominat, the group’s female wing.
Umar, also connected to Al Falah and believed to be driving the Hyundai i20 car in which the powerful blast took place, allegedly carried out the terror attack as he feared he might be caught like his fellow doctors, officials said.
The doctor from Lethpora in south Kashmir’s Pulwama district allegedly carried explosives, possibly ammonium nitrate, in the car, they said. A suicide attack was not ruled out.
Muzamil, his sister-in-law, said Umar had been an introvert right from his childhood and focused on his studies and work.
“He was working as a faculty at a college in Faridabad. He called on Friday and said he is busy with examinations and will return home after three days. He was a reserved kind of person right from childhood,” she said.
He last visited Kashmir two months ago, she said, adding that he was a loner and did not have many friends.
Preliminary findings suggest ammonium nitrate, fuel oil and detonators may have been used in the blast that ripped through the slow moving car near a traffic signal.
Delhi Police has registered a case under the Unlawful Activities (Prevention) Act and the Explosives Act under sections which deal with punishment and conspiracy of a terror attack.
Raids are also being conducted at multiple locations in Delhi. Police and the national capital has been placed on high alert with strict vigil being maintained at the airport, railway stations and bus terminals.
Police said CCTV footage of the car that exploded shows a “masked man” driving the car.
Multiple teams have been deployed to scan CCTV from the vicinity of the Red Fort and adjoining routes, officials added.
They said Umar was the lone occupant of the car.
Following the blast, security across the national capital has been intensified, and vehicle checking at all border points has been intensified as well.
All vehicles entering Delhi, whether private or commercial, are being thoroughly checked and verified as part of heightened security measures, officials said.
“Multiple teams have been deployed to scan CCTV footage from the vicinity of the Red Fort and adjoining routes to know more about the masked man,” a police official said.
“We also got to know that the vehicle was parked in a nearby parking lot for three hours, before the blast. Footage of different parking lots are also being monitored,” the source added.
He said an overnight search operation was conducted at hotels and guest houses in Daryaganj and Paharganj areas to trace possible suspects.
The Red Fort Metro Station has been closed for commuters and traffic restrictions imposed in the area.