What did Karl the criminal mentioned in the case have as her front of the drug ring?

F:  Mr. Franklin, in recent years, Nigeria’s traffickers have become key players in the global narcotics trade. Could you use a case to show how they carry on their business?
M: In June 1996, our investigator began tapping four telephone lines in the Chicago area, the taps revealed that a clothes shop run by an Nigerian women, Karl, was actually a front for a worldwide drug ring, bringing heroin from Thailand and Cambodia to the United States. The drug was resold from the clothes shop to Nigerian wholesalers in a trade worth an estimated value of $120 million a year.
F: When was she arrested?
M: On an autumn day in 1996, law enforcement officers in Chicago arrested Kafi and 20 other Nigerians. The same day, in coordinated raids in New York, Detroit, London, Paris, Amsterdam and Bangkok, police seized a dozen more people linked with the drug ring. Eventually, 27 people, most Nigerians, were indicted.
F: What was the court’s decision?
M: In August1998, Karl was sentenced to 117 moths in custody for conspiring to import and possess with intent to distribute heroin. But as a matter of fact, that gang was just the tip of an iceberg.
F:  Is there any statistics?
M: Today, Nigerian organized criminals are active in no fewer than 60 countries. In the past five years they have been implicated in over 1,200 narcotics smuggling cases, involving several hundred kilos of heroin and cocaine.
F:  How do these Nigerians successfully smuggle cocaine for so many times?
M: Well, Customs officers call them "stuffers and swallowers" because, typically, Nigerian smugglers ingest or insert into body cavities between 60 and 70 rubber condoms, each containing around ten grams of heroin or cocaine.