New York, May 26 (RHC)-- Anonymous threats against a number of flights in the United States made jets escort an Air France plane to John F. Kennedy International Airport in New York City. The threats claimed there were chemical weapons aboard multiple airplanes heading for different U.S. cities on Monday, law enforcement officials said.

The FBI was looking into the 10 threats directed at airplanes, none of which have proven true so far. According to the NBC News, all of the 10 planes have landed safely.

After being escorted by two F-15s, the Air France plane was swept by the security crew on the ground. The jets followed the plane in way that the passengers cannot spot them.

There were "no incidents or hazards" on Flight 22 from Paris, the FBI said in a statement. The FBI was dealing with multiple unconfirmed threats, one of which was received by the Maryland State Police McHenry Barrack, in Garrett County, regarding the flight from Paris.

A senior federal official told ABC News that the tip was called in on an untraceable line. The call was one of several others to local police across the United States. A Saudi Arabian Airlines flight was among the flights threatened.