Updated: July 29, 8 a.m.
All power was restored to affected customers as of 7:15 a.m. Hydro One said the outage was caused by an equipment failure.
Original story:
Nearly 5,500 Hydro One customers are without power in the Rayside Balfour area this morning.
The outage started at 2:26 a.m. Crews are on site investigating, and it's estimated power will be restored by 10:30 a.m.
The reason for the power interruption is unknown at this time.
The affected areas include the following townships: Rayside, Blezard, Morgan, Balfour, Azilda, Chelmsford and Snider.
Visit Hydro One's outage map for up-to-date information, or check back to Sudbury.com, as we update this story as more information becomes available.