Spain's police have captured four members of an international drug trafficking gang

Spain's police have captured four members of an international drug trafficking gang, including its Bulgarian leader.The police operation in Madrid discovered 10 kg of heroin with the gang, which is the largest quantity of heroin captured in Spain this year, the EFE agency reported.The drug gang and its Bulgarian leader had a whole criminal network in Spain, and had direct contacts with heroin providers from Bulgaria. Its job was to organize its distribution in Madrid.