'Thanks to propaganda,' Ukraine strikes Wagner mercenary organisation HQ.
Ukrainian missiles reportedly hit a Wagner Group base in the country's east.
A Ukrainian legislator reported long-range HIMARS rockets attacked Popasna.
Anton Gerashchenko, a ministerial advisor, said the base's location was found after it appeared in a Russian propaganda film.
The attack was also reported by Serhiy Hayday
The casualties include the Ukrainian governor of Luhansk and pro-Kremlin war reporters.
In April, British MPs were warned Russia had sent 8,000 mercenaries to Ukraine.
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