Naxals in Maharashtra's Gadchiroli district are using drones to keep an eye on the movement of police, a senior official said on Friday.

Drones or unmanned aerial vehicles have been sighted near armed outposts and sub-police stations along the state's border with Chhattisgarh in the last few months, Deputy Inspector General of Police (Gadchiroli range) Sandip Patil told PTI.