The official monitoring mission in eastern Ukraine says it has observed mortar fire near Donetsk International Airport and exchanges of fire in the surrounding area.
The Organization for Security and Cooperation in Europe monitoring mission's most recent report, from Sunday, noted "evidence of an exchange of fire close to the area of Donetsk International Airport, and in Shchastya, 20 km north of Luhansk".
It also saw "numerous impacts from shelling" in nearby Spartak, and heard shelling close to the coastal city of Mariupol on Saturday night.
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