They were part of the band led by Daniel "El Loco" Barrera. The operation was assisted authorities in the United States, a country could receive the prisoners. "It's a crushing blow," said Santos Responsible for raising awareness of the operation was successful president Juan Manuel Santos. The president said the raids were conducted in several cities, including Bogota, Cali, Barranquilla and Villavicencio. "It is perhaps the largest operation was done in the history of Colombia for extradition and tomorrow (Friday) we will give the details with the United States attorney who has come with that purpose," said Santos, who thanked the security forces for the "major blow against drug trafficking." The Colombian newspaper El Tiempo reported that 29 detainees belong to the drug trafficking gang led by "El Loco" Barreda, one of the country's most wanted criminals. Some of them were directly involved with the shipment of drugs, while others took care of the finances. The same newspaper said on Tuesday, police seized about a tonne of cocaine on a farm in Valle del Cauca, allegedly owned by Barreda, who was ready to be sent to Central America.