New Delhi, Nov. 16 -- The Delhi Police today confirmed that three 9mm-caliber cartridges were recovered from the Red Fort blast site-two live and one empty shell.

"These cartridges are prohibited for civilian use and are typically restricted to security forces or individuals with special authorization. Investigations are ongoing to determine how the cartridges ended up at the blast scene," a police official said.

Separately, sources in the National Investigation Agency (NIA) stated that Dr. Janisar Alam, a resident of the Dalkola area in Uttar Dinajpur district, West Bengal, has been detained. A taxi operator from Haryana was also detained in connection with the case.

According to investigative sources, the primary suspect, Doctor Umar, ...