Russians playing games with their jammers (believed)
GPS jamming has been ramping up in the area around Finland/Estonia etc in recent times both for civ and mil aircraft. Now in the week it has stopped nighttime landings into EETU and return to base by a couple (so far admitted) Finnair flights. A few differences in the details as reported as to whether the jamming occurred in flight/en route or in landing.
https://news.err.ee/1609326360/secon...s-interference