KYIV - Russia launched another large-scale attack on Ukraine's energy system overnight Friday, Ukrainian Energy Minister German Galushchenko said on Facebook.

"The energy and gas infrastructure in various regions of Ukraine is again under massive missile and drone attacks," he wrote.

Rescuers workers and energy sector personnel are working at the sites of the strikes to address the aftermath, Galushchenko said.

He added that all necessary measures are being taken to stabilize energy and gas supplies.

According to the Regional Military Administration, a critical industrial facility in the western Ternopil region was hit, with the region possibly facing restrictions on gas supply.

Earlier in the day, the Ukrainian Air Force reported that Russian forces had launched several groups of combat drones, along with cruise and ballistic missiles at Ukraine.