One police officer was killed in a knife attack in police headquarters in Paris. [Martin BUREAU/AFP]

At least four police officers have been killed in a knife attack inside the police headquarters in the heart of the French capital, Paris, according to media reports.

The attacker was shot dead by the police.

Paris Mayor Anne Hidalgo confirmed that “several people” were fatally wounded, but she did not confirm the exact number of fatalities.

Thursday’s attack occurred at the police headquarters on the central Ile de Cite, across the street from Notre Dame Cathedral in the French capital about 1pm local time (12GMT), according to the official.

The motive of the attack was not immediately known.

France’s interior minister and the Paris prosecutor

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