India, April 26 -- Passengers onboard an Allegiant aircraft at St. Pete-Clearwater International Airport were evacuated after a bomb threat, according to the Pinellas County Sheriff's Office. Officials at the scene said they are investigating the incident. No injuries have been reported yet.

The Federal Aviation Agency (FAA) confirmed that the St Petersburg/Clearwater International Airport is closed. Videos posted on social media showed officials deplaning passengers, who were taken back to the terminal on buses.

Kathleen Nelson told Spectrum News that she was on the Allegiant plane when the passengers were told to exit. She said passengers were waiting for about 20 minutes for takeoff.

- Allegiant Air Flight 2608, Louisville, KY, Dela...