French authorities believe arson may have played a role in a major power outage that threatened to jeopardize the Cannes Film Festival’s closing celebrations

Nearly 45,000 people suffered a power outage in and around Nice, southern France on Sunday, after an electrical transformer was set on fire overnight, according to the city’s mayor.

An arson attack and damage to a transmission tower cut off power in the area, the authorities said. The festival’s closing ceremony on Saturday is scheduled to proceed normally.