Police in Paris have detained two people who were on an Air France flight forced to make an emergency landing in Kenya when a fake bomb was found on board, reports say.
The couple were reportedly taken into custody by border police on their return to France.
One of those in police custody was an ex-police officer on the Indian Ocean island of Reunion, Europe 1 radio said.
The reports come a day after the Boeing 777 was evacuated at Mombasa airport.
The airline took legal action after the discovery of the device, an Air France spokesman told AFP news agency .
The airline “filed a legal complaint against unknown persons for endangering the life of others”, the spokesman said.
The flight was on its way from Mauritius to Paris when the suspicious object was found in a plane toilet and the decision was made to make an emergency landing.
The suspect package was taken away for examination and Air France chief executive Frederic Gagey later said it was made of a cardboard box, paper and a timer.
He described it as an “extremely aggressive act”.
The plane, carrying 459 passengers and 14 crew, had left Mauritius at 01:00 GMT and had been due to fly directly to Charles de Gaulle airport in Paris.