The Ukrainian Ministry of Defense reported Monday that a drone strike had demolished Russian Kalibr cruise missiles being shipped by train in Dzhankoi, located in Russian-held Crimea.

The Ukrainian government did not formally claim responsibility for the attack but stated it was part of the effort to “demilitarize Russia and prepare the Crimean peninsula for de-occupation.”

According to Sergei Askyonov, the leader of the annexed territory, a drone strike had occurred, and their air defense systems were activated. He also reported that one individual was injured, and two structures were damaged.

“All the drones targeted civilian sites. For example, one was hit over the Dzhankoi technical school and came down between the instruction area and a student residence,” said Oleg Kryuchkov, an adviser to the Russia-installed head of Crimea.