BOGOTA, Colombia &#8212 A reputed drug lord on the FBI’s top 10 most-wanted list was captured in western Colombia, the interior minister said Monday, in a major blow to the country’s largest remaining drug cartel.

Diego Montoya, who sits alongside Osama bin Laden as the only major alleged drug trafficker on the FBI list, is accused of leading the Norte del Valle cartel and exporting tons of cocaine to the United States. The FBI had offered a reward of $5 million for information leading to his arrest.

Aware of the arrest, FBI officials on Monday were checking fingerprint databases and otherwise trying to confirm that it was, in fact, Montoya who was captured, said spokesman Richard Kolko.

FBI officials in Bogota are “working with local authorities to confirm his identity,” Kolko said.

The FBI says Montoya is sought “in connection with the manufacture and distribution of multiple tons of cocaine.” It said the cartel is aided by left-wing rebels as well as right-wing paramilitaries.

Montoya was caught by the army in Valle de Cauca state, a cartel stronghold, said Interior Minister Carlos Holguin.

Police and soldiers had focused their search for him in a rugged canyon, but were hindered by Montoya’s wide network of informants.

Better known as “Don Diego”, Montoya has been tracked for several years with his borther being arrested in January.