A bomb scare that briefly shut down a terminal security checkpoint at Newark-Liberty Airport early Monday was triggered by a positive test on baggage that contained a computer monitor, officials said.
The FBI said a search detected "small amounts" of radiation coming from the device and was in checked baggage on a flight bound for the same destination as its owner.
The investigation is ongoing, the FBI said in a statement released by its Newark, N.J., field office. "It appears there is no cause for alarm."
Agents called the radiation "normal for this device."
The FBI did not specify what type of monitor was involved.
The Port Authority, which operates the airport, said the incident occurred in Terminal A at security gate A1. Port Authority spokesman Ron Marsico said that is the same security checkpoint where some of the 9/11 hijackers passed through.
The incident began around 7 a.m. An American Airlines spokesman, Tim Smith, told The Associated Press the package was found at the security checkpoint in the terminal where American Airlines flights are based at Newark.
It was not immediately clear if any flights were canceled or delayed as a result.
Marsico said there are two other checkpoints in the terminal and both remained open.
The Port Authority Police Department and a Transportation Security Administration bomb appraisal officer first examined the baggage and then Port Authority police and the Union County, N.J., Bomb Squad conducted further examination, Marsico said, before the all-clear was given at 8:20 a.m.
"There are protocols in place when bags show a positive result," Marsico said, adding: "It's going to be checked out thoroughly, which it was."