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Editor's note: The story is being updated.
Explosions could be heard across Crimea early on June 13, including in Sevastopol and Simferopol, the Crimean Wind Telegram channel reported amid Russian claims of Ukrainian drone attacks.
Atesh partisans reported "precise hits" against Russian military facilities near Simferopol.
"Our agents report that due to the negligence of the (Russian) command, valuable equipment was damaged, probably an air defense missile system," the group said on Telegram.
"There are also losses among the troops," Atesh said, adding that the exact numbers are difficult to establish.
The pro-Ukrainian Crimean Wind Telegram channel reported a hit in Simferopol, Crimea's capital, sharing a photo of a plume of smoke rising in the vicinity of a local power station and of the village of Perevalne. Blasts in Yevpatoriia, Saki, Fedosia, and elsewhere were also reported.
Russia's Defense Ministry claimed its air defenses shot down 125 Ukrainian drones overnight on June 13, including 70 over Crimea and seven over the Black Sea. Russian officials did not comment on possible damage.
The Kyiv Independent could not verify the claims. Ukraine has not commented on the alleged attacks.
Russia has illegally occupied Crimea since 2014, transforming the peninsula into a heavily militarized stronghold to support its war against Ukraine.
Ukrainian forces have repeatedly targeted the peninsula with missiles and drones since the outbreak of the full-scale war in 2022. Most recently, Ukrainian drones attacked an ammunition depot used by Russia's 126th Coastal Defense Brigade near the village of Perevalne.
Chris York
