Further details about the incident have yet to be revealed
In eastern Ukraine, Russian-backed separatist forces have captured two Ukrainian soldiers near the city of Horlivka, not far from Donetsk.
No other details about what happened have been made public. Oleksandr Motuzyanyk, a spokesman for Ukraine's presidential administration, says more information will be published once the safety of other servicemen can been guaranteed.
Over 120 Ukrainians are still being held prisoner in occupied areas of eastern Ukraine - some 75-80 of those are military personnel. Meanwhile, three Ukrainian soldiers were injured over a recent 24-hour period.