Story highlights Turkey alleges a Russian warplane flew into its airspace

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(CNN) Turkey's Foreign Ministry summoned the Russian ambassador in Ankara to protest and condemn what it called a violation of airspace by a Russian warplane.

The Foreign Ministry said the Russian SU-34 fighter was warned by Turkish air radar units, in both English and Russian, before it crossed into Turkish airspace from Syria on Friday.

The statement went on to warn that violations "could lead to serious consequences."

The Russian Defense Ministry denied that it violated Turkish airspace and called Ankara's allegations "unfounded propaganda.'

"There were no violations of Turkish airspace by planes of the Russian air group in the Syrian Arab Republic," the ministry said on Facebook.

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