Ukraine says a number of refugees were killed in a rocket and mortar attack on a moving convoy, which was making its way from the Luhansk area of eastern Ukraine.
Ukraine pointed the finger at pro-Russian rebels, but they denied the attack- although reports say there was heavy gunfire in the area.
Ukraine forces have moved closer to the rebel-held town, where supplies are running out.
Meanwhile, a Russian aid convoy headed for eastern Ukraine- which has been blocked from crossing the border into eastern Ukraine, by Kiev- remains at a standstill.
US State department spokesperson Marie Harf, said an agreement exists to inspect the convoy.
IN: " There is an agreement...
OUT: worked out."
DUR: 26 seconds
US State department spokesperson Marie Harf says the people of eastern Ukraine do need aid, but pointed the finger of blame at Moscow.
IN: " We agree....
DUR: 19 seconds