A hooded man shouting allegiance to Isis has stabbed a nursery school teacher in the throat in his Paris classroom.

Update: Paris police are now saying that the teacher made the entire story up. You can read the latest updates here.

The attack, which happened a month and a day after the jihadist massacres in France, took place before children arrived at a state nursery school in Aubervilliers, just north of the Paris city boundary.

Police, who are treating the incident as a terrorist attack, said that the teacher had been stabbed in the throat and stomach by scissors and a box-cutter. He was taken to hospital but his life is not in danger.

Daech is the Arabic acronym for Islamic State. The jihadist group has been warning on social media that French schools might be the next target after the shootings and suicide bombings in the Paris area on 13 November in which 130 people were murdered.

The attack took place at around 7am on Monday in the northern Parisian suburb of Aubervilliers.

The teacher has been taken to hospital but has not suffered life-threatening injuries, according to French media.

Paris prosecutor's office spokeswoman Agnes Thibault-Lecuivre said anti-terrorism authorities are looking into the incident.

Timeline of Paris attacks

Le Parisien reports that an investigation has been opened by anti-terrorist police into attempted murder in connection with a terrorist enterprise over the attack.

France is still under a state of emergency following the 13 November terror attacks in which 130 people were murdered in the capital.

In pictures: Paris stabbing Show all 8 1 /8 In pictures: Paris stabbing In pictures: Paris stabbing In pictures: Paris stabbing In pictures: Paris stabbing In pictures: Paris stabbing French police and firefighters are seen in front of the nursery school where a hooded man claiming to be acting for Isis attacked a teacher with a knife in Aubervilliers, near Paris Reuters In pictures: Paris stabbing French police and firefighters are seen in front of the nursery school where a hooded man claiming to be acting for Isis attacked a teacher with a knife in Aubervilliers, near Paris In pictures: Paris stabbing People gather near a pre-school in Paris suburb Aubervilliers, after a masked assailant with a box-cutter and scissors who mentioned the Isis group attacked a teacher. The assailant remains at large, and the motive for the attack in the town of Aubervilliers is unclear, authorities said In pictures: Paris stabbing Police officers patrol near a pre-school, in Paris suburb Aubervilliers In pictures: Paris stabbing A police officer walks in front of the building of Jean-Perrin nursery school in Aubervilliers

The unknown attacker reportedly armed himself with weapons he found in the classroom. He is understood to have been hooded, masked and wearing gloves.

He is currently on the run, reportedly armed with the box cutter and a pair of scissors.