About 1,300 Northeast Philadelphia households were left without power early Saturday morning when a defective transformer cut power to houses in Oxford Circle.

PECO customers in the Oxford Circle neighborhood lost power around 6:30 a.m. a PECO spokesperson said. All but 66 had power restored by 1:30 p.m. The remaining houses were expected to have power back on by 5 p.m., PECO said.

PECO couldn't provide any more details on the defective transformer, which was situated underground.