LOS ANGELES (CBSLA) – U.S. Customs and Border Protection computers were shutdown nationwide Friday, creating long lines at LAX and other airports around the country.

LAX Airport tweeted out at 1:33 p.m. that CBP systems were “experiencing an issue which appears to be impacting multiple airports including LAX. Officers are processing passengers manually so please check with your airline for the latest status of any flight impacts.”

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LAX later tweeted an update saying it was a temporary outage, adding that “CBP officers continue to process international travelers using alternative procedures until systems are back online.”

LAX recommended travelers continue to check with their airline directly for information on any potential flight impacts.

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Social media posts indicated that John F. Kennedy Airport in New York was experiencing similar problems.

Just after 3 p.m. LAX tweeted and update stating that “CBP systems are slowly getting back to normal and officers have processed the majority of waiting passengers at LAX with no significant impacts to flights.”

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The cause of the shutdown was not immediately known.