Story highlights Flight 65 from Los Angeles and Flight 55 from Washington were safely diverted, given all-clear

The bomb threats on Paris-bound flights came four days after terror attacks in Paris killed 129 people

(CNN) Two Air France flights headed from the United States to Paris were diverted because of bomb threats, officials said.

Both flights landed safely Tuesday night, and were searched and given the all-clear by Canadian and U.S. authorities.

Flight 65, en route 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 whether 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 because of a called-in bomb threat, a government source said.