"Today ahead of the women's football match at Hampden Park, the South Korean flag was shown on a big screen video package instead of the North Korean flag. Clearly that is a mistake," organizers said. "We will apologize to the team and the National Olympic Committee and steps will be taken to ensure this does not happen again."
The statement, however, included another gaffe: It failed to refer to the countries by their official Olympic names, causing organizers to reissue the statement using "Republic of Korea" and "Democratic People's Republic of Korea."
Commenting on the flap, the International Olympic Committee pointed to London officials.
"It's a matter for the organizers," IOC spokesman Mark Adams said.
The players walked past reporters after the match still in uniform without stopping. Two were carrying flags — the correct North Korean one.
North Korea and South Korea are bitter rivals. The flag mix-up comes amid high tension on the Korean Peninsula following a North Korean long-range rocket launch in April and repeated threats by Pyongyang to attack the South. Seoul and the U.S. have called the launch a cover for a test of banned long-range missile technology. North Korea says the rocket, which broke apart shortly after liftoff, was meant to put a satellite into orbit.