Greek authorities have arrested a 30-year-old Bulgarian citizen, identified as Sylvester Mindev, on suspicion of involvement in an organized telephone fraud network that allegedly generated more than 690,000 euros in illegal gains.

Following the arrest, police released the suspect’s photo and personal details, urging members of the public to assist the investigation and report any similar incidents. Authorities say the case forms part of a wider effort to dismantle cross-border fraud operations.

Investigators claim the suspect was part of a criminal group operating across Attica and Thessaloniki in Greece, as well as in Bulgaria. The network allegedly used impersonation tactics, with members posing as officials or representatives of state institutions.

According to police findings, victims were subjected to threats and psychological pressure. Fraudsters reportedly convinced them that relatives were in immediate danger, persuading them to hand over cash, jewelry, and other valuables in emergency-style scenarios.

The arrest followed a tip-off from a victim who cooperated with authorities. Under police surveillance, an elderly woman was instructed to leave money and valuables at a designated location under the belief she was helping a family member in distress. The suspect was detained shortly after collecting the items.