An Air France flight from Paris was escorted by two U.S. F-15 fighter jets to New York's John F. Kennedy International Airport on Monday after an anonymous threat was made against the flight, according the U.S. military. Flight 22 from Charles de Gaulle Airport landed safely in New York, an airport official said. Two U.S. Air Force F-15 fighters were launched as precautionary measure to monitor the flight as it returned to New York, said Navy Lieutenant Commander Richlyn Ivey, a spokeswoman for U.S. North American Aerospace Defense Command and U.S. Northern Command. The anonymous threatening call was made to a Maryland State Police barrack on Monday morning, police said. "The caller made a bomb threat involving commercial aviation," Maryland State Police said in a statement. Citing an unnamed senior U.S. official, ABC News said the caller made a chemical weapons threat on board the plane. ABC said the plane was to be taken to a secure area to be searched, and that the threat was not considered credible. No comment was immediately available from the FBI, which is handling the investigation. Air France also could not be reached for comment. The U.S. military spokeswoman said the command had not received information about any additional threats against commercial airliners. She also declined to identify which military base dispatched the jets, citing security concerns, but said the jets had returned to the base after plane landed safely.