ANKARA // Syria said it shot down a Turkish military plane that entered Syrian air space, and Turkey vowed to "determinedly take necessary steps" in response.
It was the most clear and dramatic escalation in tensions between the two countries, which used to be allies before the Syrian revolt began in March 2011. Turkey has become one of the strongest critics of the Syrian regime's brutal response to the country's uprising.
Late Friday, Syria's state-run news agency, SANA, said the military spotted an "unidentified aerial target" that was flying at a low altitude and at a high speed.
"The Syrian anti-air defenses counteracted with anti-aircraft artillery, hitting it directly," SANA said. "The target turned out to be a Turkish military plane that entered Syrian airspace and was dealt with according to laws observed in such cases."
Turkey issued a statement Friday night following a two-hour security meeting led by Turkish Prime Minister Recep Tayyip Erdogan, saying Syrian forces downed the plane and that the two Turkish pilots remain missing.
It said Turkey "will determinedly take necessary steps" in response, without saying what those actions would be.
"Following the evaluation of data provided by our related institutions and the findings of the joint search and rescue efforts with Syria, it is understood that our plane was downed by Syria," the statement said, without providing other details.
Relations between Turkey and Syria were already tense before the downing of the F4 plane on Friday.
Turkey has joined nations such as the US in saying that Syrian President Bashar Assad should step down because of the regime's brutal suppression of the uprising in his country. Turkey also has set up refugee camps on its border for more than 32,000 Syrians who have fled the fighting.
Syria and Turkey have expelled each other's ambassadors and Syria has accused Turkey of supporting Syrian opposition and even allowing Syrian rebels to operate out of Turkish soil. Turkey strongly denies the allegations.
After a cross-border shooting by Syrian forces in April, Turkey said it would not tolerate any action that it deemed violating its security. The firing had left two refugees dead at a camp near the town of Kilis just inside Turkey.
Foreign Ministry Spokesman Selcuk Unal earlier on Friday rejected allegations that Turkey was sending arms and other equipment to Syrian rebels as baseless. Unal said Turkey was not sending weapons to any of its neighbors, including Syria.
Turkey's military provided no details on the downed plane's mission Friday, but some Turkish TV reports said it was on a reconnaissance flight.
Syria claimed the jet violated its air space over territorial waters, penetrating about 1 kilometre, but that Syrian vessels joined the search for it, according to Turkey's NTV television. It said Syria forces realised that it was a Turkish jet after firing at it.
