Lithuanian Military Police secured a site near Pratkūnai on Tuesday, where debris from a drone shot down overnight was found.
Video shows officers cordoning off the area and inspecting pieces of the drone scattered across the ground. The debris was found near the Kaunas Reservoir, around 100 kilometres west of Vilnius.
Authorities are investigating the incident, while the drone’s origin and purpose have not yet been established.
Drones have repeatedly loomed over the skies of Lithuania, which shares borders with Belarus, a key ally of Moscow, and the Russian exclave of Kaliningrad.