Finland's Foreign Ministry said Monday that it summoned Russia's ambassador in Helsinki over a suspected violation of Finnish airspace last week, APA reports citing The Moscow Times.
Finnish authorities said Friday that they believed two Russian military aircraft entered the country's airspace off the coast of Porvoo, a city in southern Finland. The Finnish Border Guard was said to be investigating the incident.
"The [Russian] ambassador was told that Finland takes the suspected territorial violation seriously," the Finnish Foreign Ministry said in a statement to Reuters.
The ambassador had indicated he would pass on the message, the ministry said without elaborating.
Russia's embassy in Helsinki did not immediately respond to a request for comment.