Finland summoned Russia's ambassador on Monday after two Russian military aircraft allegedly violated Finnish airspace near the southern coast last week. The incident has ramped up rising tensions as Helsinki deepens its NATO integration and bolsters defenses against potential threats along its shared border with Russia. The suspected breach was off the coast of Porvoo, some 50 kilometers (30 miles) east of Helsinki, and is under investigation by Finnish authorities. The country's defense ministry first reported the incident on Friday. "The foreign ministry of Finland has today summoned the ambassador of Russia and requested an explanation regarding the suspected violation of airspace," the ministry said in a post on X.