A security breach at the San Francisco International Airport, which caused long lines and frustrated passengers, was lifted before 6 a.m. Friday, according to a spokesman.
SFO spokesman Mike McCaron told NBC Bay Area that there was some sort of "procedural breakdown," between 3:30 a.m. and 4 a.m., meaning "someone shouldn't have been inside the building."
Everyone in Terminal 3, where United Airlines is based, was cleared and re-screened, McCaron said, causing flight delays until about mid-morning.
McCaron would not be specific about what happened, but said "people are being interviewed at this time." No one had been arrested by 7 a.m.
Tim Losch, a 43-year-old man traveling to Ft. Lauderdale reported "total madness" from the airport and he was especially annoyed because no one was "giving us any information."
He decided to re-book a flight out for Saturday. "I'm pretty frustrated, but that's what happens I guess. I fly a lot for business."
The first flight Friday was expected to take off at 7 a.m., but McCaron said that's now been delayed by at least an hour. "Flights should resume to normal by mid-morning."
Click here to see Losch's tweet, "total madness #sfo this morning. no communication=chaos. all without coffee."