If sentenced, Dairo Antonio Usuga David will face mandatory minimum term of 20 years and up to life in prison.
The seizure of 4.3 tonnes of cocaine came at the end of an international investigation that resulted in arrest warrants being issued for 38 people in six countries.
Pre-vote polls show former rebel Gustavo Petro ahead so far as Colombians vote for their next leader in a country facing rising poverty and insecurity.
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