Officials in the U.S. state of Hawaii are working to restore power to the island of Oahu, after a blackout left more than 800,000 people in the dark - including President-elect Barack Obama.
Authorities in Honolulu say they suspect a lightning strike Friday night cut power to nearly the entire island of Oahu, including the beach complex where Mr. Obama and his family are vacationing.
An emergency generator was sent to the complex for the future American president, who was born in Hawaii.
Honolulu's mayor, Mufi Hannemann, said it will be several hours before power is restored.
The blackout hit just before sundown, causing traffic to snarl on major roads across the island. The international airport is closed to departing flights until daylight.
Some information for this report was provided by AP and Reuters.