LUCKNOW, April 17 -- The National Investigation Agency (NIA) has taken over investigations in an alleged Pakistan-linked espionage network that filmed sensitive locations across the National Capital Region.

Earlier, the central agency acquired complete case details of the Ghaziabad police probe, analysed the material before taking a final call, a senior police official said on Thursday.

According to the official, the central anti-terror agency has already initiated a preliminary assessment of the case records due to its suspected cross-border links and multi-state ramifications.

"The NIA has sought all relevant details, including the FIR, arrest records, digital evidence and interrogation findings. We are in the process of handing over...