A "non-specific, non-credible" bomb threat has delayed flights at the Long Beach Airport in California, and a separate bomb threat at Orange County airport has been resolved, security officials affirmed on Tuesday.
Both airports are in southern California.
At Long Beach, "they are treating it as a non-specific, non-credible threat at the moment ... although the airport is being swept by canines," a spokesman for the Department of Homeland Security said.
"Eight flights are affected. They normally open at 5 a.m. (0800 EDT) but they are now probably going to start opening between 7 a.m. and 8 a.m.," the spokesman said.
The Federal Aviation Administration said the delayed flights included those operated by JetBlue Airways, US Airways, American Airlines, and Alaska Airlines.
Officials said an earlier threat at Orange County airport had been resolved after canine teams swept the airport and found nothing amiss.
Officials could not give any additional details on the nature of the bomb threats, Reuters reports.