Ukraine defense ministry intelligence reported on it site.
"In order to kill some commanders of illegal armed formations uncontrolled by the command of the Russian occupation troops 150-servicemen detachment comprising special operations teams of the Russia GRU of the General Staff of the Armed Forces and the FSB have arrived in Donetsk city," a statement said.
Also, facts of troops, military equipment and ammunition arrival for the needs of Army Corps of rebels 1 and 2 from Russia have been confirmed:
Arrival to Ukraine through village Izvaryne border crossing: trucks with personnel (60 military) and ammunition (30 tonnes); village Amvrosiyivka heading to Donetsk city - three tanks, two armored personnel vehicles, three trucks with ammunition; through checkpoint Novoazovsk- four trucks with personnel.
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