FAA: Two Air France US-to-Paris flights diverted

An Airbus A-380 that departed from Los Angeles landed in Salt Lake City, where passengers and crew were being taken off the plane and escorted into the terminal, an FAA spokesman said. The flight was bound for Charles de Gaulle Airport in Paris.

A separate flight that left Dulles International Airport outside Washington was diverted to Halifax International Airport in Nova Scotia, also because of an unspecified security concern, and passengers and crew had disembarked, the FAA said.

Both planes landed without incident and the passengers were taken safely to terminals.

It was not yet clear whether either plane had been searched or anything had been found.

Security officials have been on high alert since last week's deadly attacks in Paris, claimed by Islamic State militants, killed 129 people.

Halifax airport spokesman Peter Spurway said the Air France Boeing 777 jet was diverted to Halifax at 10:15 p.m. and was currently sitting at the end of the airport's main runway.

"It's an RCMP matter," Spurway said referring to the Royal Canadian Mounted Police. "The passengers are being deplaned at this point and being transferred to a secure area of the terminal building because they're international passengers."

Salt Lake Airport officials said that plane had received a threat via phone. No further details were given on the threat to the other plane

"Several law enforcement agencies are working in concert, following established protocol, to determine the nature of the threats which caused the aircraft to divert," FBI Special Agent Todd Palmer, of the agency's Salt Lake City division, told the network.

Wire services