as ashar qureshi reports now, the drug lord is responsible for the vast majority of drug traffickingwindy city. >> reporter: he was named public enemy number one. it's a dubious moniker last used by chicago law enforcement to describe al capone in the 1930s. >> his involvement with the day-to-day drug trade in chicago is of a major significance, and he controls the street gangs by supplying them with the drugs. >> reporter: in chicago the u.s. drug enforcement estimates he supplies 80% of the city's heroin, cocaine, marijuana, and meth. he has been captured three times. he escaped in 2001 using money, bribes and a series of tunnels. he was captured in 2014, but escaped again last jail through a mile-long tunnel. following a dramatic raid, he was recaptured a third time on friday. authorities carried out intense and careful intelligence work, and a criminal investigation that allowed them to identify and arrest guzman and dismantle the influence of the network around this criminal. >> reporter: that network has chicago at the center. in 2009, federal authorities in illinois indicted h