A Seattle City Light repair crew was responding to a power outage affecting about 1980 homes and businesses in South Seattle and part of unincorporated King County early Tuesday morning.

The cause of the outage, which started about 12:20 a.m., was not immediately known. The crew expected to have power restored about 4 a.m.

The general boundaried of the outage were SW Brandon Street on the north, SW 106th Street on the south, 10th Avenue S on the east and 21st Avenue SW on the west.