More than 2,400 homes and businesses in Letterkenny have suddenly lost power this Halloween night after a major outage.
Electricity went out at 8.52pm for properties in Gortlee, Glencar and surrounding areas of the town.
ESB crews have been mobilised and are currently working on emergency repairs.
It is estimated that supplies will be restored by 12.30am tonight.
This is the second major fault in the area this week, as another outage struck on Wednesday morning.