New Delhi, April 11 -- The National Investigation Agency (NIA) will interrogate Mumbai terror attack accused Tahawwur Rana around 10-11 am on Friday. Rana, the mastermind of the deadly 26/11 Mumbai terror attacks, was successfully extradited to India on Thursday. He landed in Delhi late Thursday.

The NIA formally arrested Rana upon his arrival on Thursday evening. A special court in Delhi subsequently remanded him in the custody of the agency for 18 days. According to Aaj Tak, Rana has been kept in an armored cell equipped with CCTV cameras, motion sensors and biometric lock.

It is likely that after 18 days of Rana's custody, Rana may be shifted to Tihar Jail in Delhi, and later if needed, he may also be taken to Mumbai for trial, the r...