2:44 PM PT -- The system is back online. They have not determined the cause.
2:30 PM PT -- A source who is an official from Customs and Border Protection tells TMZ, "There is no indication of nefarious activity at this time." That said, CBP still doesn't know why the system failed.
2:23 PM PT -- Law enforcement sources at one of the country's biggest airports tell TMZ, they are "openly talking" about the possibility of a cyber attack, although they have not been briefed by Customs and Border Protection. CBP says it's trying to determine how the system went down, but is offering no answers or theories.
There is chaos at airports across the United States, because the entire U.S. Customs system has failed.
Customs officials haven't figured out what happened, and obviously one thing that comes to mind is a possible cyber attack, although officials haven't said that's even a working theory.
I was finally able to check in for a flight before actually getting to the airport 😂.... & now US Customs systems are down NATION WIDE! Line is crazy & getting crazier. pic.twitter.com/RctYJbEFrF