Colombia ? A reputed drug kingpin was captured Monday following a shootout, police said, ending a years-long hunt for a man wanted by American officials for allegedly smuggling tons of cocaine into the United States.

Eugenio Montoya Sanchez is believed by authorities to be a leader of the Norte del Valle drug cartel, which the FBI lists on its Web site as the “most powerful and violent drug-trafficking organization in Colombia.”

Together with his brother Diego Montoya Sanchez – the alleged mastermind of the cartel that operates out of the southern city of Cali – he is wanted for extradition by a U.S. federal court in Miami for smuggling hundreds of tons of cocaine into the United States.

U.S. anti-narcotics authorities in Colombia had offered a $5 million reward for the capture of each of the brothers.

Eugenio Montoya Sanchez was arrested in the town of El Dovio, 125 miles west of Bogota, following a shootout, police said.