Two people, including a three-year-old child, were killed in separate overnight Ukrainian attacks targeting the southern Russian city of Voronezh and the Russian-controlled peninsula of Crimea, local authorities said Thursday.

In Voronezh, located around 500 kilometers (310 miles) south of Moscow, falling drone debris triggered a fire at a residence that killed a three-year-old boy, regional Governor Alexander Gusev said.

A 19-year-old man suffered minor injuries in the strike, which also damaged several buildings and the roof of an online marketplace warehouse.

Further south, the Kremlin-installed head of annexed Crimea, Sergei Aksyonov, said one person was killed and four others were injured following a drone strike on the peninsula.

Meanwhile, east of Moscow, Ukrainian drones targeted an energy facility in the Ulyanovsk region, setting it on fire, the local governor said.