PITTSBURGH (KDKA) - Allegheny County Police are investigating a threat at Pittsburgh International Airport. Law enforcement tells KDKA that a threat was made on board a Spirit Airlines flight heading to Florida just before take-off. The pilots were able to pull over on the runway where it currently remains.

Authorities are investigating after a reported possible bomb threat was made onboard a plane at Pittsburgh International Airport Thursday morning, sources tell Channel 11.

Allegheny County Police were investigating “a security issue” at Pittsburgh International Airport after they removed all passengers from a Spirit plane set to fly Thursday morning to Tampa, officials said.

A flight from the Pittsburgh International Airport to Tampa was rescheduled on Thursday while police investigated a bomb threat that they determined was never made. Allegheny County police said they were called to investigate a "security issue" on a Spirit Airlines flight scheduled to depart from Pittsburgh to Tampa.

Allegheny County Police are investigating a threat aboard a flight to Tampa out of International Airport. Hours of secretly recorded videos and phone calls have offered a rare glimpse into how the longest-serving legislative leader in American history operated behind closed doors.

A Spirit Airlines flight was disrupted this morning at Pittsburgh International. Allegheny County Police are investigating a possible bomb threat onboard the flight bound for Tampa just before takeoff.