(CNN) A man wielding a knife has been shot after he attacked an officer outside a police station in central Brussels early on Tuesday morning, a Brussels police spokesman told CNN.

The attack took place outside the police station on Rue du Marche au Charbon.

One police officer was injured in the attack, his condition is not thought to be serious. The attacker was shot and is in the hospital receiving treatment.

Police spokesman Ilse Van De Keere said there had been no confirmation yet whether or not it was a terror incident and investigations were ongoing.

Developing story, more to come.