(CNN) —Two Air France flights headed from the United States to Paris were diverted Tuesday night due to bomb threats, officials said.

Both flights landed safely.

Flight 65, headed from Los Angeles to Paris, was diverted to Salt Lake City after a bomb threat was called in from the ground, a U.S. government official said.

The official did not know if anyone was arrested and was not aware of any unruly passengers on board.

Shortly afterward, Air France Flight 55 from Washington’s Dulles International Airport to Charles de Gaulle Airport in Paris was diverted to an airport in Halifax, Nova Scotia — also due to a bomb threat, a government source said.

The source did not know if the same person called in both threats.

“Several law enforcement agencies are working to determine the nature of the threats which caused the aircraft to divert,” FBI Special Agent Todd Palmer of the Salt Lake City division said.

No U.S. military aircraft were scrambled in either of the reported Air France incidents, NORAD spokesman Preston Schlachter said.

“Diversion of flights are the most draconian response to a bomb threat,” CNN national security analyst Juliette Kayyem said……..