A 14-year-old boy is among those who have been shot in Lille, local media reports.

The shooter is understood to be on the loose and all three people gunned down have been taken to hospital.

Armed police were quick to the scene and soon put the city in a state of lockdown.

(Image: TWITTER)

Witnesses heard at least five shots in the incident.

The motive for the shooting is currently unknown.

The trio were shot near a Metro Station.

Lille is situated in northern France – close to the Belgian border.

(Image: TWITTER)

The incident happened at Jacques Febvrier Square, near to station Porte d'Arras.

France remains in a high state of alert after a spate of deadly ISIS-claimed terror attacks over the past few years.

In July, 86 people were killed in Nice when a jihadi driving a cargo truck mowed down crowds as they celebrated Bastille Day.

And in November 2015, ISIS killed 129 people in a series of coordinated attacks in Paris.

And the attack comes just days after an ISIS-inspired terrorist attack in Westminster – killing and injuring dozens in London.

A polices source said: "The attack was in Place Jacques Febvrier, next to the Porte d'Arras metro station. Officers remain at the scene.

"Those hurt have been taken to the Saint-Vincent-de-Paul hospital. None of the injuries are life threatening."