All of United Airlines flights were grounded Sunday because of a computer outage, the Federal Aviation Administration said.

"A ground stop is in place for domestic flights due to an IT issue," United tweeted. "We're working on a resolution. We apologize for the inconvenience."

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The ground stop was lifted after 9 p.m.

"The ground stop has been lifted," United tweeted. "We're working to get flights on their way."

The Aircraft Communications Addressing and Reporting System, or ACARS, was having issues with low bandwidth, officials told NBC News.

International flights were not affected.

This is a developing story. Check back for updates.

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Thousands of UGA students enjoy during the annual “Frat Beach” party for the weekend of the Georgia-Florida football game on St. Simons Island, Friday, November 1, 2024. On the weekend of the Georgia-Florida football game, St. Simons Island’s East Beach becomes “Frat Beach,” an open-air party teeming with thousands of highly inebriated college students. (Hyosub Shin / AJC)

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