French authorities investigate second power blackout in two days

At least 45,000 people affected by malicious act' in Nice, a day after Cannes film festival disrupted by similar outage

French authorities have launched an investigation into a power blackout blamed on sabotage that affected at least 45,000 people, just a day after a similar outage disrupted the final day of the Cannes film festival.

Authorities in Nice said an electrical transformer had been set on fire in the west of the city in the early hours of Sunday, with power restored later in the day. A day earlier, a separate blaze, believed to have been started by arson, contributed to a power cut that hit Cannes.