Unknown

 
PL-000
 Poland
UFO - Passengers - LawEnforcement

06 June 2022
20:44

Origin : EPBK
 
EPBK
Białystok
Podlachia
 Poland
Elevation : 153m / 502ft
 

CommentMadagascar ADS-B code ?
If I had to guess, which I obviously do, I'd say it's one of the Polish Border Guard's gliders.

Resources
Image
21:39 UTC
Image
21:40 UTC