Amsterdam TERROR alert: Arrests at airport and train station amid bomb threats

DUTCH capital Amsterdam was plunged into chaos as cops arrested two people after a bomb scare at the city's main airport.

Amsterdam's Schipol airport was in lockdown overnight after hundreds were evacuated due to a "suspicious situation" which was followed by the arrests of two men – one in the airport and another a train station just 20 minutes away. 

Swarms of armed police and passengers could be seen crowded outside the terminal buildings shortly after 9.30pm local time.

It later emerged that the Sheraton Hotel adjacent to the building was also evacuated due to a "suspicious situation".

EVACUATION: Hundreds of people could be seen outside Amsterdam's Schiphol airport

This is Amsterdam airport atm.. They also evacuated the trainstation near my house and my dad is about to fly:/pic.twitter.com/H6D730azWk

— Romina Groot (@Rominagroot) April 12, 2016

A bomb disposal unit was deployed at aroun 11pm local time.

One man remains in custody as the airport begins to open this morning. 

Officials confirmed flights will resume after the terrifying scenes in which a police helicopter was reportedly seen circling around Schiphol and masked police secured the surrounding area. 

Passengers took to social media to share pictures of the chaotic scenes. 

One Twitter user referred to the incident as a "terrorism" threat.

She wrote: "S*** just got real. There is a high terrorism threat at Schiphol Amsterdam airport. That's exactly where I am right now."

ARREST: Police were quickly on the scene to arrest suspects

The terrifying scenes came as Europe is on high security alert as French and Belgian officials seek to capture the final suspected terrorists involved in the Paris massacre and more recent Belgium attacks which saw 34 killed in twin airport and train station bombings.

Pictures of a bearded and exhausted looking Salah Abdeslam — the mastermind of the Paris attacks – emerged yesterday.

Sullen and tired, the 26-year-old French national looked a far cry from the smiling wannabe jihadi pictured before the Paris attacks.

Some sort of Security threat is going on At Amsterdam Schiphol airport now... pic.twitter.com/aG3lpj2wa0

— Tony Fonderson (@TonyFonderson) April 12, 2016

Police spokesman Alfred Ellwanger yesterday said that "around 9:45 pm (1945 GMT) a man was arrested on the square in front of the main entrance to the airport's plaza".

"The bomb disposal squad is also on the scene and they are checking the man's luggage," he sdded.

Officials have yet to confirm if the arrest at the airport was linked to a later arrest at a train station. 

TELEGRAAF

LOCKDOWN: The police reportedly blocked off entrances to the airport

Part of Schiphol is not accessible due to an incident. Police is investigating the matter. For now, air traffic has not been affected.

— Schiphol (@Schiphol) April 12, 2016

The official Schiphol Twitter account said this evening: "Part of Schiphol is not accessible due to an incident.

"Police is investigating the matter. For now, air traffic has not been affected."

Witness Tony Fonderson said: "Everyone is remaining calm. Shops were evacuated."

TWITTER

ARMED AND READY: Dutch police were quickly onto the scene

Witness Victor Pascual recalled how people started running frantically. 

"We have not been give any further information apart from to remain calm," he added.

The second arrest appears to have been made at Leiden Central Station about a 20-minute train ride from the airport, according to Ministry of Justice and Security spokesman Lodewijk Hekking.

The incident comes a month after co-ordinated terror attacks in Brussels, capital of Holland's neighbour Belgium, killed 35 people.