The Main Intelligence Directorate of the Ministry of Defense of Ukraine has said Russian-led forces suffer losses amid chaos in the so-called "Donetsk People's Republic" ("DPR") following the assassination of its leader, Alexander Zakharchenko.

It is reported the inconsistency of actions between new enemy units and those who are on constant combat duty leads to an increase in the number of incidents of "friendly fire" and, as a result, the aggravation of feuds between their military personnel.

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"In particular, a mass brawl between groups of terrorists occurred on September 15 as a result of another shelling of own positions by one of the units of the 1st Army Corps of the Russian Armed Forces, resulting in two deaths from beating and over 10 people were seriously injured and hospitalized," the report says.

As UNIAN reported earlier, "DPR" leader Alexander Zakharchenko was killed in an explosion in a Donetsk restaurant on August 31.

Russian-controlled militants in the temporarily occupied territory of Donetsk region claimed a "Ukrainian trace" in the blast, while Russia's Ministry of Foreign Affairs echoed the accusations.

The Ukrainian SBU, for its part, did not rule out the Russian special services' involvement in the assassination, adding that local feuds between local terrorist leaders could be the cause.