A Jewish teacher has been stabbed in Marseille by three people claiming to be Islamic State supporters, say prosecutors.

Three people on two scooters approached the teacher in the street before showing him a picture of Mohamed Merah, who killed seven people in a series of attacks in southern France in 2012, on a phone.

“The three people insulted, threatened and then stabbed their victim in the arm and leg. They were interrupted by the arrival of a car and fled,” prosecutor Brice Robin said.

One of the attackers was wearing an Islamic State t-shirt, he added.

The victim suffered three knife wounds and was taken to hospital, but officials said his life was not in danger.

France is on heightened alert after last Friday’s terror attacks in Paris in which 129 people were killed and over 350 others hurt.

The atrocity, which was claimed by the Islamic State jihadist group, was the worst in French history.

Last month, a rabbi and two Jewish worshippers were stabbed in a knife attack in Marseille.

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