NYC-Bound Jet Grounded at SFO After Threatening Phone Call

Officials stopped American Airlines Flight 24, headed to John F. Kennedy International Airport, before its scheduled takeoff at 7:30 a.m. PST, the Transportation Security Administration said.

The TSA said passengers were being taken off the plane on at least five buses to be interviewed and re-screened.

"All passengers are safe and out of an abundance of caution, TSA requested the plane be moved to a remote location," TSA spokeswoman Suzanne Trevino said in a statement.

The FBI later determined that the telephoned threat wasn't credible, but in the wake of the 9/11 attacks and a series of airline scares in the past year, the incident still rattled nerves as it played out live on national TV.

Police were investigating who called in the hijacking threat and what their motivation might have been.