"When seizures are made... it is often not the product of (police) intelligence," Quijano added. "They are delivered (by the narcos) to create the image that... the security strategy is working."
Bustamante conceded that some police have been arrested for colluding with traffickers, without giving numbers.
In 2018, then Medellin mayor Federico Gutierrez accompanied nearly 1,000 police who bulldozed the city's main drug market, known as "The Bronx."
Gutierrez, the right-wing candidate in presidential elections later this month, has vowed a harsher police clampdown on domestic drug trafficking.
His leftist rival Gustavo Petro wants to address drug use as a public health problem.
Since 2021, the government has demolished at least 129 vending spots countrywide.
But many quickly return, including The Bronx.
Twenty-four hours a day, vendors call out the names of their wares: "blones" (marijuana joints), "rocks" (cocaine), ecstasy or "wheels" as they call Clonazepam pills, a psychiatric medicine with sedative effects.
Others offer "tusibi" -- calling it "tusi" for short or sometimes "pink cocaine" -- the latest party drug based on Ketamine mixed with substances such as ecstasy and mescaline, a psychedelic derived from a cactus.
Though "banned" from street sale -- considered too harmful even by the gangs -- those who want it can also find heroin, at about $2.5 per gram.