Authorities say 69 suspected members of a Macedonian drug ring have been arrested in the Austrian capital, according to AP. The Federal Office of Criminal Investigations describes the police operation as one of the biggest in Europe against organized narcotics trafficking and says it involved dozens of raids. Police in Macedonia on Wednesday announced the arrest of 29 suspected heroin dealers linked to trafficking rings in Germany and Austria. Austrian and Macedonian officials are expected to divulge further details at a joint news conference later Thursday.