MADRID, Spain (AP) – Colombian drug barons and criminal gangs are trying to turn Africa into a hub for shipping cocaine to Europe, the head of the American Drug Enforcement Administration told The Associated Press on Tuesday.

In an exclusive interview, DEA administrator Karen Tandy said drug interdiction officials battling the $300 billion-a-year global drug trade also worry about Africa’s new role as a waystation for Europe-bound heroin from southwestern Asia, particularly Afghanistan.

“Africa will be, in terms of a drug hot bed, one of our worst nightmares if we don’t get ahead of that curve now,” Ms. Tandy said during a major international anti-drug conference hosted by the DEA and Spain’s government. MoAfrica “has emerged as a drug hot spot, a hub, in just the last several years,” she said.

In the case of cocaine, the drug is shipped ready-to-consume by boat to Africa and sent on to Europe by land, plane or ship, said Russell Benson, the DEA regional director for Europe and Africa.

Traffickers are also using traditional smuggling routes, with Spain as the main gateway for cocaine entering Europe. But Africa has become a tempting additional conduit because of its spotty law enforcement and porous borders.

“They are looking for a vulnerable spot,” Mr. Benson said. “It is the path of least resistance.”

Europe’s appetite for cocaine is strong and growing – Ms. Tandy said it is similar to the cocaine craze of the 1980s in the United States.

And users on the continent pay in euros, the European Union currency that has risen sharply against the dollar in recent years, making Europe’s users an irresistible target for Colombian cartels, the DEA officials said.

The cash flow has traffickers smuggling euro notes back home in bulk – millions of bills at a time, the officials said.

In Colombia, traffickers sell euros to currency traders at a rate slightly below the market rate. They lose a bit in the transaction but don’t care because they obtain clean Colombian pesos.

Euros from drug profits then trickle their way into the economy. There are so many euros floating around Latin America that of the $2.3 billion worth of euros that entered the United States last year, 90 percent came from Latin America, Ms. Tandy said.

Ms. Tandy was in Madrid to attend the International Drug Enforcement Conference, a 25-year-old forum that the DEA holds each year to meet with colleagues from around the world to discuss the war on illegal drugs.

This is the first time the conference has been held outside the Americas, and Spain was chosen because of its role as the main gateway for drugs entering Europe and what DEA officials call its tenacious effort to fight the onslaught.

Spain leads Europe for cocaine seizures and is fourth in the world, and it accounts for half of all hashish seizures, Spanish Interior Minister Alfredo Perez Rubalcaba said.

It and other countries face increasingly ingenious traffickers. Among current techniques, gangs drop loads of cocaine fitted with radio-transmitting buoys into the Atlantic and have boats pick up the drugs, said Maria Marcos Salvador, head of Spain’s Organized Crime Intelligence Center.