The National Investigation Agency (NIA) has taken over probe into the seizure of natural uranium worth over Rs 21 crore in Mumbai, its spokesperson said on Sunday.

The Maharashtra Anti-Terrorism Squad (ATS) had arrested two persons -- Jigar Jayesh Pandya and Abu Tahir Afzal Choudhary -- on May 5 night and seized 7.1-kg uranium worth about Rs 21.3 crore from them.