Ukraine refugee convoy hit by rockets, says military

Rockets and mortars have hit a convoy of vehicles carrying refugees away from fighting in the Luhansk area of eastern Ukraine, causing many casualties, the Ukrainian military says.

Details are still unclear and there has been no independent confirmation of the attack, which Ukraine has blamed on pro-Russian rebels.

A rebel news outlet reported a heavy exchange of artillery fire in the area, Reuters news agency says.

Luhansk is still held by separatists.

David Stern reports.