New Delhi/IBNS, Nov. 20 -- The National Investigation Agency (NIA) on Thursday held four more prime suspects in the November 10 blast near Delhi's Red Fort, bringing the total number of arrests in the case to six.

After being produced in Patiala House Court on Thursday afternoon, all four were remanded to 10 days of NIA custody by Principal Judge Anju Bajaj Chandra.

The agency identified the men as Dr Muzammil Shakeel Ganai of Pulwama (J&K), Dr Adeel Ahmed Rather of Anantnag (J&K), Dr Shaheen Saeed of Lucknow (Uttar Pradesh), and Mufti Irfan Ahmad Wagay of Shopian (J&K).

The four had previously been detained by Jammu & Kashmir Police for suspected links to a terror module.

An NIA official, speaking on condition of anonymity, described...