Air France airplane
Air France airplaneThinkstock

Two separate Air France flights headed from the US to Paris were grounded Tuesday, after receiving anonymous bomb threats. 

Flight 65 from Los Angeles landed safely in Salt Lake City, Utah, a Federal Aviation Administration (FAA) official told Reuters Wednesday, carrying 479 passengers and crew. The FBI later said in a statement that no evidence had been found to support the bomb threats made against the flight. 

Flight 55 from Dulles airport in Washington, D.C., was redirected to Nova Scotia hours later; 262 passengers and crew were evacuated from the plane. Royal Canadian Mountain Police searched the aircraft with police dogs, but found nothing. 

"As a precautionary measure and to conduct all necessary security checks, Air France, applying the safety regulations in force, decided to request the landings of both aircraft," the airline said in its statement. “An investigation will be led by the authorities to identify the source of the telephone call.”

Security officials worldwide have been on high alert for bomb threats, after an Islamic State (ISIS) bomb likely downed a Metrojet flight over the Sinai desert earlier this month. Just days ago, ISIS gunned down 129 people in cold blood in Paris, adding to tensions over France-bound flights.