MONTREAL (CBS SF) – Anonymous threats that caused an Air France flight from San Francisco to make an emergency landing Monday evening have proven to be false, Air France officials said Tuesday morning.

Flight 83 left SFO around 3 p.m. and was headed to Charles de Gaulle Airport near Paris, France, but was diverted to Montreal because of anonymous threats, airline officials confirmed in a Twitter message at 10:50 p.m.

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The crew of decided to land in Montreal as a precaution, airline officials said.

Local authorities there carried out a full security search before concluding the threats were unfounded, according to airline officials.

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According to FlightAware.com, the flight is expected to arrive in Paris around 5:30 p.m. Central European Time (about 8:30 a.m. Pacific.)

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