But the report said cocaine trafficking surged again after the operation ended.

Until recently, his drug organization had been No. 1 in international cocaine trafficking.

In the end, some 200,000 people died - all decades before Colombia became the center of cocaine trafficking.

At the time, he was serving the 6th of 15 years in prison for organized cocaine trafficking.

At the end of the 1980s he had been involved with cocaine trafficking.

He said the meeting was part of an investigation into organized crime's involvement in cocaine trafficking.

Also, he had conversations with a woman suspected of cocaine trafficking.

And when cocaine trafficking is pressured in one area, it shifts to another.

The researchers say the technique should be useful in the fight against cocaine trafficking.

He had previously done five years in a California prison for cocaine trafficking.