According to the NIA investigations, Naseer had knowingly harboured Umar-un-Nabi by providing him logistical support.

He is also accused of destruction of evidence related to the terrorist attack, the agency stated earlier on December 9.

The NIA has already arrested nine people, including three more doctors Dr Muzammil Ganaie, Dr Adeel Rather, Dr Shaheen Sayeed and religious preacher Maulvi Irfan.

Two others, Amir Rashid Ali, and Jasir Bilal Wani alias Danish, have also been arrested.

On December 18, NIA arrested the ninth accused in the case, Yasir Ahmad Dar, a Jammu and Kashmir resident and allegedly a close associate of Umar-un-Nabi.

An active participant in the conspiracy, Dar had allegedly taken an oath to carry out self-sacrificial operations, the agency said.

Umar-un-Nabi was driving the explosive-laden i20 car that detonated outside the Red Fort on November 10.