SIMFEROPOL, Ukraine (AP) — Russian forces backed by helicopter gunships and armored vehicles Saturday took control of a village near the border with Crimea on the eve of a referendum on whether the region should seek annexation by Moscow, Ukrainian officials said.

The action in Strilkove appeared to be the first move outside Crimea, where Russian forces have been in effective control since late last month. There were no reports of gunfire or injuries. The incident raises tensions already at a high level before Sunday’s referendum.