Censor.NET reports citing the OSCE SMM report.
"At 6:16 p.m. on June 2 the SMM lost all communication with an SMM long-range unmanned aerial vehicle (UAV) while it was flying at an altitude of 9,000ft in the area between "DPR"-controlled Korsun (31km north-east of Donetsk) and "DPR"-controlled Shevchenko (28km north-east of Donetsk)," the report reads.
While flying 2 km south of Korsun village, 12.5 km south-east of the contact line, the UAV experienced dual jamming of its Global Positioning System, causing loss of all communications and the video link
Seconds later, it experienced simultaneous system failures. At approximately 18:44 the Ukrainian Armed Forces liaison officer reported that they had lost the UAV from their radar, approximately 2 km south of Korsun at the same time when the SMM had also lost communication with the UAV.
Read more: SBU, UN agreed to establish joint working group to monitor situation in ATO area, - Tandit
At the moment, the SMM, together with the Center for Control and Coordination (JCCC), is going to the presumed crash site to recover possible UAV debris and the anti-jamming device in the tail section, and collect any other relevant information.
OSCE representatives have also reported about a surface-to-air missile launcher (9K33 Osa, 210mm) and an anti-aircraft gun (ZU-23), spotted in Korsun on June 1.
Read more: OSCE launched debate on deploying armed police mission in Donbas, - Poroshenko
On May 27, an SMM drone was downed near "DPR"-controlled Horlivka, while pro-Russian mercenaries were trying to shoot down an UAV of the OSCE SMM not far from occupied Dokuchaievsk on May 10.