In five operations carried out September 21-October 3, 2021, the Argentine National Gendarmerie (GNA, in Spanish) and the Argentine Naval Prefecture (PNA, in Spanish) seized 7,589 kilograms of marijuana and two aircraft that a criminal organization was using to transport cocaine among Paraguay, Uruguay, and Argentina.
On October 3, in the municipality of Corpus, Misiones province, the PNA reported seizing 400 kg of marijuana on a vessel that had come from Paraguay and docked at the Chati Natural Port. Service members found the drug during security procedures on the riverine border.
On October 1, the GNA reported seizing a light aircraft at a clandestine airfield in the San Pedro municipality, Buenos Aires province, which a criminal organization was using to transport cocaine. According to authorities, this criminal group procured the drugs in Paraguay, unloaded it in Uruguay, and refueled in Argentina.

On September 30, the Argentine Prefecture reported seizing 992 kg of marijuana in the Puerto Corazón municipality, Corrientes province. During a combined patrol operation, agents identified a speedboat coming from Paraguay. When the crew saw that they were cornered, they jettisoned the drug on the Argentine river bank and fled. Later on, during a second operation that took place in the El Dorado municipality, Misiones province, the Prefecture seized an additional 42 kg.
On September 29, the GNA reported seizing another narco-aircraft in Entre Ríos province that the same criminal group was using to transport cocaine. Intelligence operations by the national Office of the Attorney General facilitated the seizure of both aircraft.

The GNA, for its part, reported the seizure of 309 kg of marijuana from a vehicle in the Gobernador Roca municipality, Misiones province, on September 28.
Finally, the GNA confirmed on September 21 the seizure of 5,846 kg of marijuana in the municipality of Montecarlo, Misiones province. Criminals had hidden the drug, which a drug sniffing dog detected among eucalyptus posts, in a semi-trailer truck.