SUDBURY -- Greater Sudbury Hydro has restored power in the downtown and hospital areas after an early morning outage.

The utility company said in a tweet Thursday morning that a squirrel triggered part of the outage and there was a problem at a DASH substation. Crews worked quickly to repair a transformer.

"The trigger for this morning’s outage was a squirrel shorting a circuit which then also caused a problem in a transformer," said Wendy Watson, a spokesperson for Greater Sudbury Utilities, in an email.

The power went out just after 6 a.m. and was fully restored before 8 a.m.

Watson said in an email 4,171 customers were affected by the outage's peak. Some parts of the Minnow Lake neighbourhood were also affected.