A US reconnaissance RQ-4A Global Hawk drone has been seen monitoring the Russian western border, according to the PlaneRadar portal.
The aircraft took off from an airbase in Italy and was spotted on Tuesday, 18:50 Moscow time, flying between Russia's Kaliningrad region and Belarus.
The portal reported that the drone was heading to its base following the completion of its mission.
The Russian Ministry of Defence has repeatedly urged Washington to abandon its surveillance operations near Russian borders. However, Washington has responded to these requests with refusal.