Officers of the Kolomna urban district Interior Ministry, together with a representative of the state anti-drug committee, destroyed wild cannabis plantations covering more than one hectare during operation Mak-2025, the Moscow region police press service said on 15 September 2025.[1] The patches grew near the settlements of Sergievsky and Kamenka in Kolomna.[1]

Forensic experts who examined sample plants found tetrahydrocannabinol and concluded the cannabis could be used to produce marijuana.[2] Officers treated the sites with specialised herbicides intended to kill the plants including their roots.[2] A Moscow region Interior Ministry spokesperson quoted in Kolomna-Spravka said laboratory tests confirmed the seized samples contained psychoactive material suitable for making narcotics.[2]