More than 120,000 subscribers lost electricity in Donetsk as a result of the accident, said the city's mayor, Alexey Kolmezin. "Partially in Voroshilovsky, Kalininsky, Kirovsky, Proletarsky, Kievsky, Kuibyshevsky, Leninsky and Petrovsky districts, an emergency shutdown of 843 transformer substations took place," Kolmzin said in a statement. The reasons for the break are not specified. In the past, DPR authorities have reported large-scale drone attacks on the region's energy system.