A soldier in France is in a serious condition after being stabbed by two men who reportedly criticized the country's airstrikes against Islamic State in Syria.

The victim, from the 8th Marine Infantry Parachute Regiment, is being treated in hospital following the attack in the southern town of Saint Julien du Puy, which lies around 70 miles to the east of Toulouse.

He had been alone in uniform on a training march when he was set upon by the pair armed with a knife, on Thursday at 8.40pm local time.

A manhunt to catch the attackers is under way.

France is part of an anti-ISIS coalition, which has carried out bombing raids against the terror group.

The country has been on a state of high alert in the wake of last year's deadly attacks in Paris.

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