Bulgarian police have arrested a group that was illegally excavating Thracian tombs near the town of Pernik. In an operation on 7th December, eight men from Sofia - ranging in age from 24 to 52 - were arrested, six of them on the archaeological site and two, alleged to be organisers of the illegal excavation, were arrested subsequently.
The group arrested included people who had previous records for theft, assault and car theft [...] A 46-year-old man from Sofia also was detained in connection with illegal excavation and vandalism. At subsequent searches at various addresses, police found and confiscated firearms with erased numbers, ammunition, masks, tools, security jamming equipment, 300 coins of cultural and historical value – some identified as Roman sestertii – earrings, rings and other jewellery of cultural and historical value. Police also found multiple mobile phones and SIM cards.Who'd buy coins and artefacts from other people? Who'd actually know who they were buying from?
Tann, 'Bulgarian police bust group raiding Thracian tombs', Archaeology News Network, 8th December 2013.