Ukraine's military chief Valerii Zaluzhnyi said Friday that the country's army was successfully resisting Russian forces advancing from the north.
Zaluzhnyi said Ukrainian forces had been able to repel the breakthrough of Russian troops in the Chernihiv area north of the capital, Kyiv.
Enemy vehicles were forced to retreat from Chernihiv in the direction of Sedniv and from Horodnya to Semenivka," he said.
However, it appears Russian forces are consolidating their positions to the northwest of Kyiv after taking the airbase at Hostomel on Thursday.
Ukraine's Deputy Minister of Defense, Anna Malyar, tweeted Friday about a "possible invasion of the occupiers in Vorzel and surrounding settlements," which is about 25 kilometers (15 miles) from Kyiv.
Malyar added that Russian troops had seized two Ukrainian army vehicles, had put on Ukrainian army uniforms and were trying to advance on Kyiv.