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.

Police are investigating after a 'security issue' on board a plane at the Pittsburgh International Airport. According to Allegheny County Airport Authority, County Police are leading the investigation into the issue aboard the flight scheduled to depart to Tampa Thursday morning.

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 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.

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.

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.