Eight Turkish soldiers have been killed in an offensive against Kurdish militias in northern Syria.
The Turkish military said in a statement that the US-backed YPG, which Turkey regards as a terrorist group aligned to the PKK, attacked a tank north of Afrin city.
Turkey launched operation "Olive Branch" against the YPG on 20 January.
Turkish Prime Minister Benali Yildirim said his country's military incursion in Syria aims to eradicate what he calls "a terror belt" along Turkey's borders.
A Kurdish health official said 150 civilians have been killed since the start of the Turkish operation.
Meanwhile, Turkish President Recep Tayyip Erdogan sought to reassure France's Emmanuel Macron over the operation.
Mr Macron angered Turkish officials by saying in a newspaper interview last week that France would have a "real problem" with the campaign if it turned out to be an "invasion operation".
Turkey's Western allies do not classify the YPG as a terror group and have worked closely with its fighters in the battle against so-called Islamic State militants.
But in telephone talks, Mr Erdogan told Mr Macron that Turkey had "no eye on the territory of another country", the state-run Anadolu news agency reported.
He added that the operation was "aimed at purging" the area of Afrin in northern Syria of "terror elements" such as the YPG.
Mr Erdogan has sought to build a strong relationship with Mr Macron despite rocky ties with the EU, visiting Paris in January for talks.
But after Mr Macron's remarks last week, Foreign Minister Mevlut Cavusoglu responded that France had no right "to give us lessons" on a cross-border offensive, pointing to France's own colonial history.
