Azerbaijan’s Defense Ministry has said that one of its soldiers was killed in a late-morning incident near the border with arch-foe Armenia.

It called the death of the junior sergeant in the Tovuz region of northwestern Azerbaijan the latest provocation amid a rise in violations.

Last week, Armenian officials announced that one of their soldiers was killed by gunfire and shrapnel in roughly the same region.

Each side has blamed the other for an uptick in violations of a decades-old cease-fire, and contradictory reports make determining responsibility difficult.