A suspicious package found at Airbus factory site in Toulouse sparked a terror alert as 200 people were evacuated.
The item -- believed to be a box containing three cans of fizzy pop connected with wires -- raised suspicions that it could be a homemade bomb.
It was found in the engine of an Airbus A330 that was still being built.
But police and bomb squad experts who arrived at the scene and examined the threat said no explosives were present, a source told La Depeche du Midi.
On Wednesday, Islamic State released a picture claiming the Russian passenger plane was brought down by a similar device.
The image appeared in the latest edition of the extremists' magazine Dabiq.
The edition celebrates the recent Paris attacks and is entitled "Just Terror".
The magazine also claims to have images of passports belonging to victims who perished after the Metrojet flight exploded over Sinai.
It disintegrated in mid-air 23 minutes after taking off from popular tourist resort Sharm El-Sheikh in Egypt for St Petersburg on October 31.
Islamic State also said it had originally planned to bring down a "Western' plane over Egypt's Sinai but changed its target to a Russian one after Moscow launched airstrikes in Syria."
An editorial claimed the Russian jet bombing and Paris terror attacks were "revenge exacted upon those who felt safe in the cockpits of their jets."
ISIS said it had smuggled the bomb onto the Russian plane after finding a security loophole at Sharm al-Sheikh airport.
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