Fighting has started again in eastern Ukraine between government troops and separatist rebels, Ukrainian military officials said.
Yesterday a missile killed at least 15 refugees who were trying to flee the area "burning them alive". More bodies may still be recovered.
This comes days after a convoy of aid supplies travelled to the country from Moscow but Ukraine is still to let them in over fears it could spark an invasion.
A shoot-out has erupted at a shopping mall in the centre of Donetsk, the Ukrainian stronghold of pro-Russia rebels, according to reports.
A Reuters reporter said up to six rebel gunmen were hiding behind cars in the mall's car park, firing at another group of people.
It comes as Russian president Vladimir Putin has agreed to meet Ukrainian president Petro Poroshenko on August 26, along with representatives from the European commission and the Eurasian Customers Union.
Poroshenko confirmed that "stabilising the situation" in eastern Ukraine would be on the agenda.
More than 2,000 people have died in clashes between the pro-Moscow rebels and forces from Kiev.
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.