Ljubo Milovic

Montenegrin police director assistant Dejan Knezevic in his office in Podgorica. Photo: Government of Montenegro

Knezevic was arrested as part of a large-scale investigation of police links with the notorious Kavac drug gang, which has led to 12 current and ex-police officers' arrests and to national warrants for the arrest of three others.

EUROPOL headquarters in the Hague, Netherlands. Photo: EPA-EFE/JERRY LAMPEN

Milovic said this startling info was presented to the former government at an official meeting but did not name the three officers or their ranks.