Turkey sent last month troops and military hardware to the northwestern region to support rebels fighting Russian-backed Syrian government forces looking to retake the rebel stronghold.
The offensive displaced more than 900,000 civilians, Ahval news agency reported.
The European Union sent on Tuesday officials to Greece and Turkey in a bid to calm nerves after the Turkish government announced it was granting free passage to migrants seeking to get to Europe, attracting thousands to border checkpoints to Greece.
Turkish President Recep Tayyip Erdogan had warned the EU that Turkey would not bear the cost of millions of refugees from Syria alone and repeatedly threatened to “open the gates” to Europe if the union did not offer support. When the escalating conflict in Syria’s northwestern Idlib province led to the death of dozens of Turkish soldiers last week, Erdogan finally made good on his threat to Europe, also launching a military offensive against the Syrian government.
European Commission President Ursula von der Leyen and other top EU officials visited the Turkey-Greece land border on Tuesday, after thousands of migrants pressed into the buffer zones at border checkpoints in a bid to enter Greece.
Erdogan said Greek security forces had killed two of the migrants during the border confrontations on Monday, an accusation the Greek side vehemently denied.
EU Foreign Minister Josep Borrell scheduled a two-day visit to Turkey to discuss the developments in Idlib and the migration crisis on Tuesday and Wednesday.
Reporter's code: 50101