DEIR EZ-ZOR, Syria

Fifty-seven Syrian regime troops were killed Monday in a Daesh attack on the eastern province of Deir ez-Zor, sources told Anadolu Agency.

The sources said that Daesh captured scores of Assad regime forces and seized a missile unit, three tanks and four armored vehicles during the assault.

According to the sources, Daesh also targeted the Deir ez-Zor military airbase, destroying two tanks and three armored vehicles.

The city of Deir ez-Zor, the provincial capital of Deir ez-Zor province, has been besieged by Daesh for many months.