Amid street-to-street fighting, Russian bombardment had hit a chemical plant sheltering civilians in the key eastern city, causing a huge fire, regional governor Serhiy Haidai said in a video address on Sunday.
Fierce street-by-street fighting is ongoing in the key eastern city of Sievierodonetsk, where Russian troops are said to have blown up a key bridge over the Siverskyi Donets river linking it to its twin city Lysychansk, cutting off a possible civilian evacuation route.
Russian bombardment also hit a nitrogen fertilizer plant sheltering hundreds of civilians, resulting in a large fire, Luhansk regional governor Serhiy Haidai said.
Outside of the Donbas, Ukrainian officials have reported that the army has made progress in repelling the Russian forces in the Kherson region, while the Ternopil region was bombarded overnight by the Russians.
Review the main developments on Sunday in our blog below.