More context from the article:
CNN’s analysis of video that shows the drone hitting the beach found that seconds before the explosion, automatic gunfire from at least three weapons is audible. During the gunfire, the drone veers sharply and dives into the beach. The drone appeared to overshoot a Russian radar installation just west of the beach where it came down.
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head of the Ukrainian government’s Center for Countering Disinformation, Andriy Kovalenko, said: “This was the work of Russian air defense forces, which shot down the drone over a beach full of vacationers. And pathetic efforts by the Russian authorities, who often conceal air raid alerts or fail to do everything necessary to ensure Russians’ safety during such alerts.”
“The deaths of Russians on the beach in Gelendzhik are entirely the fault of the Russian air defense forces,” Kovalenko said. “Ukraine uses its weapons exclusively against Russia’s military-industrial complex (and) economic infrastructure that affects Russia’s ability to finance the war.”