Chaco provincial police stopped a truck on National Route 11 at kilometre 999 during the night and found that it was already listed for seizure in a theft case.[1][2] With federal judicial authorities involved, officers took the vehicle and its two occupants to the provincial police school for a witnessed search.[1][2]

A narcotics dog indicated drugs, and the search recovered 4,927 kilograms and 249 grams of marijuana, plus an Honor mobile phone.[1][2] The two men on the truck were detained for a suspected breach of national drug law 23.737.[1][2]

Security minister Hugo Matkovich presented the haul on 15 October 2026 as operation Carbón Verde and called it historic for the provincial force.[1][2] Officials valued the load at about ARS 1.5 billion wholesale (about USD 1 million) and up to ARS 7.5 billion at retail.[1][2] Matkovich said the inquiry into origin and destination was continuing and would not be detailed yet.[1][2]