Finnish air traffic controllers have imposed temporary restrictions on flights over the eastern Gulf of Finland, according to a spokesman for the EU's air traffic control authority.
The move marks a tightening of airspace controls in a region already under scrutiny due to heightened security concerns.
The restrictions come shortly after the Finnish Defence Forces announced measures to secure a section of the eastern Gulf of Finland amid an emerging drone threat.
That earlier warning, issued on Saturday, aimed to protect the area as security tensions escalated.
The new aviation curbs suggest the situation remains volatile, with authorities taking additional steps to mitigate potential risks to civilian and commercial aircraft.
For airlines and logistics operators, the restrictions could disrupt routes and increase operational costs.