Fresh shelling in Eastern Ukraine has hit a school playground and a minivan killing at least 10 people.
A further eight were injured in a part of Donetsk which has seen heavy fighting in recent days.
The shelling happened on the first day of the new school year and officials say there were around 200 children inside the school at the time.
The attack is the worst on civilians since Ukraine and pro-Russian fighters agreed to the first cease-fire agreement on September 5.
In Eastern areas affected by the fighting, the start of the new school year was delayed by a month.
Kiev expressed anger that local officials allowed classes to resume, especially as fighting had re-intensified in recent days.