United Airlines issued a ground stop for all departing flights in the U.S. and Canada on Tuesday evening, Sept. 23, marking the second time in two months that the company has issued such an order.

In an emailed statement to USA TODAY, United said it "experienced a brief connectivity issue just before midnight Central time on Tuesday, Sept. 23 but has since resumed normal operations."

It’s unclear whether any flights were delayed or canceled due to the incident.

USA TODAY has requested more information from United Airlines and the Federal Aviation Administration.

On Aug. 6, the company was forced to issue a ground stop at major U.S. airports, including Chicago, Denver and Houston. The stop lasted for a few hours and was quickly resolved. Looking for a free mini puzzle? Play the USA

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