Police in Peru say they have destroyed more than 50 tonnes of marijuana.
In an operation lasting five days, the police say they located a record 207,000 marijuana plants in two central regions of the country.
According to a report released this week by the US Office of National Drug Control Policy, Peru is the top cocaine producer in the world, followed by Bolivia and Colombia.
Analysts say that little is known about Peru's marijuana production.
Peru's Interior Minister Wilfredo Pedraza said the police operation had led to the burning of 17 times more marijuana than had been destroyed in the whole of 2011.
Police Director Gen Raul Salazar said a total of 34.5 hectares (85.25 acres) of marijuana plantations had been destroyed in the La Libertad and and Huanaco regions.
Gen Salazar said the police had identified the financial brains behind the marijuana plantation and were moving in on him.