Photo from UNIAN

A Ukrainian soldier was killed during a combat mission in Donbas on September 13.

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"Yesterday, one soldier was fatally wounded in the area of the Joint Forces Operation while performing a combat mission," the press center of the Joint Forces Operation Headquarters said on Facebook.

"A working group of the military service of law and order of the Armed Forces of Ukraine and the command of the military unit are clarifying the circumstances," reads the report.

As UNIAN reported earlier, Russia's hybrid military forces on September 13 mounted 22 attacks on Ukrainian Army positions in Donbas, eastern Ukraine, with eight Ukrainian soldiers reported as sustained injuries of moderate severity.