A flight from Belgium, Jetairfly, arrived at the Orlando-Sanford International Airport Tuesday afternoon. But officials did not allow the crew to pull up to a gate.
The pilot was asked to park in a remote area as a precaution.
The jet carried 269 passengers and a crew of 10.
Passengers were bused to the terminal and their luggage was inspected individually. They said they had no idea what had happened in Brussels until they landed.
After a stop in Miami, the flight will return to a different airport along the Belgian coast, WESH.com reports.
Airport officials in Sanford said the flight was the only one from Brussels to make it to the U.S. Tuesday, according to WFTV.com.
Law enforcement did not immediately say what security concerns they had about the plane, WFTV reported.