Russian troops and security forces fought for a second day on Tuesday against an alleged cross-border raid that Moscow blamed on Ukrainian military saboteurs but which Kyiv portrayed as an uprising against the Kremlin by Russian partisans.

Vyacheslav Gladkov—governor of the Belgorod region on the Ukraine border—said forces continued to sweep the rural area around the town of Graivoron, where the alleged attack on Monday took place. Twelve civilians were wounded in the attack, he said, and an older woman died during the evacuation. Gladkov urged residents of the area who evacuated to stay put and not come back to their homes just yet. “We will let you know immediately ... when it is safe,” he said.