From our news desk. More fighting in Donetsk:
Reports from eastern Ukraine say some 10 people have been killed in shelling in the rebel-held city of Donetsk.
Three people were reportedly killed when a shell exploded in a school playground on October 1.
Several others reportedly died when a shell hit a mini-van in a nearby street.
The blasts occurred as pupils returned to school, after the start of the school year was postponed from September 1 due to fighting between Ukrainian government forces and pro-Russian separatists.
Shelling has repeatedly been reported in Donetsk despite an September 5 cease-fire in the conflict, which has killed more than 3,000 people since April.
The Donetsk airport has been a focus of fighting since the cease-fire.
A rebel commander told the AP news agency on October 1 that the rebels controlled most of the airport.