Three 'dangerous men' remain at large after police stormed Gare du Nord station in Paris last night.

Officers armed with rifles poured into the building at around 11pm, sealing off the surrounding area.

It is understood some passengers were kept on trains as teams of officers scoured carriages for the 'terror suspects'.

The men are said to have been reported as dangerous to France by a 'partner country' on Friday.

Armed police have sealed off the Gare du Nord station in Paris tonight, pictured, as part of a huge security operation

Hundreds of people including children have been evacuated from the station, pictured

La Parisien reported the men had also been spotted in Bordeaux and Marseilles over the weekend.

The paper reported officers searched a train arriving from Valenciennes in northern France, which is thought to have had 200 people on board.

Unconfirmed reports suggested two of the three men being hunted were Belgian nationals while the other was from Afghanistan.

Dave James Phillips, a 39-year-old technology consultant from Britain, said he was getting off the last train in from London when he saw officers flooding the station.

Mr Phillips said: 'There were police immediately, and a chap with his hand on his gun.

'As we were walking down the platform, one came down and said, "Rapide, rapide. Out, out."'

Mr Phillips said police kept pouring into the station as passengers were hustled out and police buses and unmarked cars were 'driving quite dramatically up the road.'

Paris police spokeswoman Johanna Primevert said that the operation was aimed at 'removing doubt' and ended with no arrests.

The busy station is the terminus of a large suburban and national rail network as well as Eurostar trains from London.

A Eurostar spokeswoman said the incident did not appear to have any relation to its trains and did not appear to affect its passengers.

The operation began after the last Eurostar arrivals and departures late Monday.

Police confirmed their 'checks' had finished by around 2am local time, with the station to 'return to normal'.

Police vehicles were described as 'driving dramatically' around the station as officers arrived at the scene. Pictured is a Research and Intervention Brigade (BRI) vehicle, part of a special French police force

Police in Paris said the response at Gare du Nord, pictured, was to 'dispel any doubt' about a threat

Police would not confirm if there had been any arrests or injuries at the station, pictured

It comes a day after Emmanuel Macron was elected president of France, defeating right-wing opponent Marine Le Pen.

Earlier in the day riot police clashed with communists and revolutionary groups as thousands of demonstrators gathered at the Place de la Republique calling for 'resistance' to President Macron's 'capitalist' agenda of employment and benefits reforms.

A single tweet from Paris' police service announcing the operation early Tuesday gives very little detail.

But the service said the security operation was launched to 'dispel any doubt' about a threat.

France's new President-elect has vowed to be a tough negotiator. He has described Britain's decision to leave the EU as 'a crime', and is in favour of a so-called hard Brexit that will see the UK kept out of the single market.

He also pledged to unite France following his resounding 66 per cent election landslide that ended any hopes of victory for the nationalist firebrand Marine Le Pen, 48, and her National Front (FN) party.

Officers have evacuated the station over 'security concerns' although the nature of the threat remains unclear