Iran Press/ Europe: A vast fireball erupted at the storage plant in the Freida industrial district of Belgorod shortly before 6 am local time.
It is the first accusation of a Ukrainian airstrike on Russian soil since Moscow invaded its neighbor in late February.
The alleged attack's footage shows several missiles being fired from low altitude, resulting in a massive explosion that sends flames and smoke into the air.
The explosion in Belgorod comes amid Western claims that Russia aims to stage 'false flag' attacks as a justification for continuing the war in Ukraine.
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Two days earlier, Russia claimed Ukrainian forces had dropped a missile on a munitions depot some 12 miles from the border, also in the Belgorod region.
According to Russian sources, six missiles hit the facility in Krasny Oktyabr, with four soldiers wounded.
If the attacks on Russian territory are confirmed as Ukraine, it will mark a significant escalation in the war and a change of tactics from Kyiv.
Until now, hostilities have been limited mainly to Ukrainian territory.
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