They all died from the shelling. This was stated by U.S. permanent representative to the UN Samantha Power.
“”The report (assistant UN Secretary General for human rights Šimonović — ed.) are not listed the hundreds of nameless victims who remained in debaltseve. So, last month, 500 corpses were found after the siege was over 500 dead, it is in the houses and cellars where people were hiding from Russian attacks,” said Power during a meeting of the UN Security Council on Friday.
She also recalled that the leader of the DNR stated that all who did not leave the city, will be under their attacks. While the road to escape also was fired. “I mean, people risk being stuck and leaving the city,” added Power.