KYIV, Ukraine (AP) — Ukrainian officials reported intense combat as Russian forces relentlessly assaulted the eastern Ukrainian city of Avdiivka for a fifth consecutive day Saturday.

City leader Vitalii Barabash reported that Moscow was deploying additional forces to encircle the strategically important city in the eastern Donetsk region, situated just north of the Russian-held regional capital, also called Donetsk.

"The enemy hasn't stopped either assaulting or shelling positions" around Avdiivka, Barabash said on Ukrainian television.

Around 1,600 civilians remain within the city, a stark co...