Weekend 'landing' of Greek Police special anti-crime unit comes after assassination of land developer, who was active on Mykonos, in Athens this month

Four people between the ages of 19 and 20 have been arrested for making weapons with a 3D printer and for possessing and selling illegal substances

Another eight suspects are cited in a voluminous indictment, with one man believed to be still in Greece; another two individuals believed to have fled abroad and the rest currently serving prison terms in the country

The leaked video shows the crime scene where the gangland-style slaying of a reputed organized crime figure took place in the early morning hours of Sunday.