Turkey on Saturday accused Russia of a new violation of its airspace, warning Moscow against "irresponsible behaviour".
"A Su-34 plane belonging to the Russian Federation air force violated Turkish airspace at 11:46 local time yesterday (Friday)," the foreign ministry said in a statement.
"Before the violation actually took place, Russian plane was warned numerous times by Turkish air radar units, (through appropriate channels) both in English and Russian languages.
Despite several previous explicit statements of warnings by both Turkey and NATO, this new violation is yet another concrete example of Russian escalatory behavior."
Turkish President Recep Tayyip Erdogan on Saturday warned Russia it will "face consequences" after the latest violation of its airspace.