New Delhi, May 20 -- The National Investigation Agency (NIA) on Wednesday arrested a Pak-backed spy involved in clandestinely passing confidential security-related information to Pakistan Intelligence Officers (PIOs) as part of an anti-India terror conspiracy.

According to the agency, the Kolkata resident, Zafar Riaz, alias Rizvi, had a Look Out Circular issued against him, and proceedings were also underway to declare him a Proclaimed Offender (PO) when he was taken into custody. Arrested under various sections of BNS, Official Secrets Act and UA (P) Act, the accused was married to a Pakistani national, with his children also Pak citizens.

Convicted once earlier in an espionage case under the IPC and the Official Secrets Act, Zafar had...