Two Ukrainian servicemen were killed and another was wounded when the cross-country vehicle they were traveling in hit a mine outside the town of Shyrokyne in Donetsk region east of Mariupol on Sunday morning, Ukraine's presidential spokesman for the anti-terrorist operation said.

"The wounded serviceman has been transported to a hospital in Mariupol," Oleksandr Motuzianyk said on 112 Ukraine television.

All three were members of a motorized infantry battalion, he said.

Earlier reports said that four Ukrainian servicemen were killed as their motor vehicle was blown up in the town of Schastia in Luhansk region.