Photo from UNIAN

"At 10:58 the patrol members were stationary in two vehicles with the doors open when they all heard a whistling sound followed by an explosion, and saw dark grey smoke coming from behind an abandoned brick farm building, 200-300m south-south-west, assessed as outside the disengagement area," reads the OSCE SMM's daily spot report.

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"The patrol left the area immediately and returned safely to its base in Donetsk city," the report says.