The Pará Civil Police operation named Inimigo Oculto located and destroyed about 9,000 cannabis plants on Tuesday 30 May 2023.[1] The plants were growing in an area surrounded by dense forest and protected by traps in the Umirizal community, in the rural zone of Terra Alta in north-eastern Pará.[1]

At the site officers seized a homemade 28-gauge firearm and one round of ammunition.[1] By the early afternoon of Wednesday 31 May no one had been arrested.[1] A sample of the vegetation was also seized and sent for analysis to the forensic science police headquarters in Belém.[1]

Thiago Dias, director of the Guamá regional superintendency, said further steps would be taken to identify the cultivators and everyone involved in the production.[1]