A three-member team of the National Investigation Agency (NIA) held talks with senior police officers here on Friday over the investigation into the alleged arms training by the Popular Front of India (PFI) at Narath here.
The team was led by NIA Deputy Inspector General Ravi Prasad.
The police here had arrested 21 PFI activists with some weapons from a suspected arms training centre at Narath here on April 23.
A police team led by Kannur Deputy Superintendent of Police P. Sukumaran is investigating the case registered at the Mayyil Police station here.
Police sources said that the discussions focused on the nature of the alleged extremist activities of the PFI activists at Narath. The NIA officials did not visit Narath, they said.
The visit of the NIA officials is seen as a precursor to handing over of the case to the NIA.