A teacher has been attacked in a classroom in Aubervilliers, a suburb of the French capital, Paris, by a man citing the so-called Islamic State.

The attacker shouted: "It's Daesh [Islamic State]. It's a warning", stabbing the teacher with a box cutter or scissors before fleeing.

The teacher's life is not in danger, police said.

France remains on high alert after the terrorist attacks in Paris on 13 November that left 130 people dead.

Police sources said the teacher was stabbed in the side and throat at about 07:10 (06:10 GMT) as he was preparing for class in the Jean-Perrin d'Aubervilliers school.

The attacker reportedly arrived wearing a balaclava and gloves but was unarmed and used weapons he found in the classroom.

The man fled on foot after the attack and is still on the run. A search team has been deployed.

The anti-terrorism branch of the Paris prosecutor's office has opened an investigation for attempted murder in relation to a terrorist act.

The Islamic State's French-language magazine Dar-al-Islam recently urged followers to kill teachers in France, describing them as "enemies of Allah" for teaching secularism, Agence France-Presse news agency reports.