Estonian authorities announced Monday the discovery of a drone carrying approximately five kilograms of explosives in the southeast of the country. The drone is believed to have entered Estonian airspace earlier in June. A local resident discovered the device while mowing a field in the municipality of Rõuge, near the Latvian border. Authorities are investigating the origin and intended target of the drone, treating the incident with serious concern. The discovery raises questions about potential security threats and the increasing use of drones for illicit purposes. Estonia, a member of both the European Union and NATO, has been bolstering its security measures amid regional tensions.