Sofia’s defense ministry says it sent a special unit to inspect and dispose of the drone.

A drone carrying an explosive device was discovered on Bulgarian territory over the weekend.

The Bulgarian defense ministry said Monday that it sent a special unit to destroy the drone, which was found overnight in the northern city of Tyulenovo on the Black Sea coast of the NATO country.

Tyulenovo is about 30 kilometers from Romania’s southern border and hundreds of kilometers from Ukraine’s Danube River ports which Russia has bombarded with missiles and drones over the summer.

The Bulgarian defense ministry said a five-member team from the Varna Naval Base was sent after a request from the regional governor and the defense chief.

According to Bulgarian media, citizens found the drone on Sunday evening. The investigators discovered that 82 millimeter high-explosive ammunition was attached to the remains of the drone.