In a statement Sunday, the Turkish General Staff said Syrian opposition fighters had been exposed to chemical gas during a missile attack by ISIS. 
The General Staff said 22 fighters were observed showing symptoms of chemical gas exposure in northern Syrias Khalidiyah region, according to Anadolu Agency (AA). 
The Turkish military also said a clash with ISIS militants had left one opposition fighter dead and 14 others injured. 
Meanwhile, Turkish warplanes destroyed four ISIS targets in the Anifah neighborhood near al-Bab, also in Syria's north.

Source: QNA