A narcotics laboratory producing large quantities of cocaine was discovered at Anavyssos, southeast of Athens, yesterday in what police believe is the first drug operation of its type in Greece, with links to the Colombian drug cartel. Five people were arrested when police uncovered the fully equipped laboratory and seized a total of 26 kilos of cocaine. Police said it is the first narcotics lab in Greece which produced cocaine from the beginning rather than just packaging or adulterating the drug. An unknown chemical substance was being used at the lab as a main ingredient, which authorities believe was smuggled into the country by container. Two Venezuelan nationals arrested are believed to be behind the local operation which had been set up by a Colombian drug cartel. One of the Venezuelan suspects told police that the head of the Colombian cartel had sent him to run the operation in Greece. The other suspects arrested were two Albanian nationals and a British man.