Ten people are dead in eastern Ukraine after pro-Russian rebels opened fire on government forces and buildings.

The attacks by the Russian proxies killed two Ukrainian soldiers and eight civilians.

“We really strongly condemn this escalation of fighting and we call all sides to cease it and to observe the ceasefire,” European Commission spokeswoman Catherine Ray told journalists in Brussels.

Ukrainian military officials say that pro-Russian forces are continually violating the cease-fire agreed to in the Minsk II accord.

“This war looks like a war of attrition,” Gen. Viktor Muzhenko, the chief of staff of Ukraine’s armed forces, told the Wall Street Journal. “It’s Russia’s intent to demoralize our forces, and using that mechanism they want to influence Ukraine’s military leadership as well as the state leadership.”

The United Nations says the conflict in Ukraine has killed over 6,000 people since April 2014.  At least 1.4 million people have been forced to leave their homes.