The Defence Ministry had announced Friday that 25 soldiers were wounded and seven others were missing following an unexplained accident during the firing of heavy weapons ammunition.
Recep Tayyip Erdogan said Saturday that the incident involved an ammunition depot explosion and resulted in four deaths.
He was speaking at a memorial on the 80th anniversary of the death of the Turkish republic's founder, Mustafa Kemal Ataturk.
It wasn't clear if the explosion occurred during training or a clash against rebels.
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