Authorities in the western Ukrainian region of Vinnytsya ordered an evacuation early on Saturday, saying an infrastructure site had been struck in a Russian attack.

“At this time there is no need for a general evacuation, apart from the immediate area around the site of the hit, said Vasyl Polishchuk, head of administration for the town of Kalynivka, according to the town’s website.

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It did not say what target had been struck or what weapon had been used.

Regional Governor Serhiy Borzov had reported the hit on an unspecified infrastructure site, a term Ukrainian officials sometimes use to refer to facilities involved in power generation or other industries.

Earlier reports said drones had been operating in the area.