"According to our conclusions, our plane was shot down in international airspace, 13 nautical miles from Syria," Davutoglu said in a television interview, Agence France Presse reported. "The plane did not show any sign of hostility toward Syria and was shot down about 15 minutes after having momentarily violated Syrian airspace."

US Secretary of State Hillary Clinton spoke with Davutoglu about Friday's incident, saying that the United States would stand behind Turkey.

"The United States condemns this brazen and unacceptable act in the strongest possible terms. It is yet another reflection of the Syrian authorities' callous disregard for international norms, human life and peace and security," Clinton said, according to CNN.

The Syrian military alleged that the fighter aircraft had violated Syrian airspace. However, Turkish president Abdullah Gül and other spokesmen have not confirmed this, though Gül said that "it is routine for jet fighters to sometimes fly in and out over [national] borders".

June 2012

More about the incident here. The reaction of western media media and politicians is hilarious.
https://en.wikipedia.org/wiki/June_2012_interception_of_Turkish_aircraft
http://www.bbc.com/news/world-middle-east-18562210