Lucknow/Srinagar, Dec. 2 -- The National Investigation Agency (NIA) on Monday carried out coordinated searches and questioning in Uttar Pradesh and Jammu and Kashmir as it deepened its probe into the Red Fort blast case, which killed 15 people on November 10, and the recovery of 2,900 kg of explosives from Faridabad last month, officials said.

Working closely with local police units, the agency is now tracking medical professionals and associates allegedly linked to the attacks, those familiar with the investigation added.

In Lucknow, an eight-member NIA team reached the Khandari Bazar residence of arrested suspect, siblings Dr Shaheen Ansari and Dr Parvez Ansari, around 5.30 am. Investigators questioned their father, Shaheed Ansari, a ...