Picture showing the main entrance of Schiphol Airport in Amsterdam, taken on February 14, 2008. Schiphol Airport expects to reduce its profit in the coming year because of the introduction of flight tax on July 1st, 2008. The new flight tax is part of Dutch Cabinet plans to limit CO2 emissions. AFP   PHOTO  ANP PHOTO MARCEL ANTONISSE   NETHERLANDS-OUT  BELGIUM-OUT (Photo credit should read MARCEL ANTONISSE/AFP via Getty Images)
MARCEL ANTONISSE/AFP/Getty Images/File
Picture showing the main entrance of Schiphol Airport in Amsterdam, taken on February 14, 2008. Schiphol Airport expects to reduce its profit in the coming year because of the introduction of flight tax on July 1st, 2008. The new flight tax is part of Dutch Cabinet plans to limit CO2 emissions. AFP PHOTO ANP PHOTO MARCEL ANTONISSE NETHERLANDS-OUT BELGIUM-OUT (Photo credit should read MARCEL ANTONISSE/AFP via Getty Images)
Now playing
01:54
Passengers and crew are safe after 'false alarm'
CNN
Now playing
05:30
Unprecedented footage shows front line of Ukrainian conflict with Russia
5995404 02.09.2019 Iranian Foreign Minister Mohammad Javad Zarif attends a news conference following his meeting with his Russian counterpart Minister Sergei Lavrov, in Moscow, Russia. Iliya Pitalev / Sputnik  via AP
Iliya Pitalev/SPTNK/Sputnik via AP
5995404 02.09.2019 Iranian Foreign Minister Mohammad Javad Zarif attends a news conference following his meeting with his Russian counterpart Minister Sergei Lavrov, in Moscow, Russia. Iliya Pitalev / Sputnik via AP
Now playing
04:09
Iran accuses Israel of sabotaging nuclear site, vows revenge
Ash rises into the air as La Soufriere volcano erupts on the eastern Caribbean island of St. Vincent, seen from Chateaubelair, Friday, April 9, 2021. (AP Photo/Orvil Samuel)
Orvil Samuel/AP
Ash rises into the air as La Soufriere volcano erupts on the eastern Caribbean island of St. Vincent, seen from Chateaubelair, Friday, April 9, 2021. (AP Photo/Orvil Samuel)
Now playing
01:08
See the looming clouds of ash over La Soufrière volcano
screengrab Vanuatu villagers mourn philip
Reuters
screengrab Vanuatu villagers mourn philip
Now playing
02:03
Remote tribe worships Prince Philip as god, mourns his death
ITN
Now playing
01:15
Prince Charles speaks following Prince Philip's death
LONDON, UNITED KINGDOM - APRIL 10: The Honourable Artillery Company fire a gun salute at The Tower of London on April 10, 2021 in London, United Kingdom.  The Death Gun Salute will be fired at 1200 marking the death of His Royal Highness, The Prince Philip, Duke of Edinburgh. Across the country and the globe saluting batteries will fire 41 rounds, 1 round at the start of each minute, for 40 minutes. Gun salutes are customarily fired, both on land and at sea, as a sign of respect or welcome. The Chief of the Defence Staff, General Sir Nicholas Carter, said "His Royal Highness has been a great friend, inspiration and role model for the Armed Forces and he will be sorely missed." (Photo by Chris Jackson/Getty Images)
Chris Jackson/Getty Images
LONDON, UNITED KINGDOM - APRIL 10: The Honourable Artillery Company fire a gun salute at The Tower of London on April 10, 2021 in London, United Kingdom. The Death Gun Salute will be fired at 1200 marking the death of His Royal Highness, The Prince Philip, Duke of Edinburgh. Across the country and the globe saluting batteries will fire 41 rounds, 1 round at the start of each minute, for 40 minutes. Gun salutes are customarily fired, both on land and at sea, as a sign of respect or welcome. The Chief of the Defence Staff, General Sir Nicholas Carter, said "His Royal Highness has been a great friend, inspiration and role model for the Armed Forces and he will be sorely missed." (Photo by Chris Jackson/Getty Images)
Now playing
02:03
Prince Philip tributes pour in from around the world
CNN Weather
Now playing
01:35
Powerful Tropical Cyclone Seroja takes aim at Western Australia
People view flowers left in front of the gate at Buckingham Palace in London, after the announcement of the death of Britain's Prince Philip, Friday, April 9, 2021. Buckingham Palace officials say Prince Philip, the husband of Queen Elizabeth II, has died. He was 99. Philip spent a month in hospital earlier this year before being released on March 16 to return to Windsor Castle.
Matt Dunham/AP
People view flowers left in front of the gate at Buckingham Palace in London, after the announcement of the death of Britain's Prince Philip, Friday, April 9, 2021. Buckingham Palace officials say Prince Philip, the husband of Queen Elizabeth II, has died. He was 99. Philip spent a month in hospital earlier this year before being released on March 16 to return to Windsor Castle.
Now playing
01:54
Tributes to Prince Philip pour in from around the world
Britain's Prince Philip, Duke of Edinburgh, in his role as Captain General, Royal Marines, attends a Parade to mark the finale of the 1664 Global Challenge on the Buckingham Palace Forecourt in central London on August 2, 2017.  
After a lifetime of public service by the side of his wife Queen Elizabeth II, Prince Philip finally retires on August 2, 2017,at the age of 96. The Duke of Edinburgh attended a parade of Royal Marines at Buckingham Palace, the last of 22,219 solo public engagements since she ascended to the throne in 1952.
 / AFP PHOTO / POOL / HANNAH MCKAY        (Photo credit should read HANNAH MCKAY/AFP/Getty Images)
HANNAH MCKAY/AFP/Getty Images
Britain's Prince Philip, Duke of Edinburgh, in his role as Captain General, Royal Marines, attends a Parade to mark the finale of the 1664 Global Challenge on the Buckingham Palace Forecourt in central London on August 2, 2017. After a lifetime of public service by the side of his wife Queen Elizabeth II, Prince Philip finally retires on August 2, 2017,at the age of 96. The Duke of Edinburgh attended a parade of Royal Marines at Buckingham Palace, the last of 22,219 solo public engagements since she ascended to the throne in 1952. / AFP PHOTO / POOL / HANNAH MCKAY (Photo credit should read HANNAH MCKAY/AFP/Getty Images)
Now playing
01:39
The life of Prince Philip, Duke of Edinburgh
screengrab myanmar ambassador to UK
CNN
screengrab myanmar ambassador to UK
Now playing
01:02
Video shows Myanmar's ambassador 'locked out' of embassy
King Abdullah II of Jordan and his half brother, former crown prince Hamzah bin Al Hussein
AFP/Getty Images
King Abdullah II of Jordan and his half brother, former crown prince Hamzah bin Al Hussein
Now playing
02:39
Jordan's King breaks silence about family fallout
CNN
Now playing
06:13
Inside Iraq's crippling crystal meth crisis
Now playing
05:27
Myanmar special envoy: It is time for the world to stop another genocide
Navalny tea
Life.RU
Navalny tea
Now playing
02:44
Videos show Putin critic inside prison
Norwegian Coastal Administration
Now playing
00:34
Video shows dramatic crew rescue after ship lost power during storm
(CNN) —  

Fears of a hijacking at Amsterdam Airport Schiphol briefly brought one of Europe’s busiest airports to a standstill on Wednesday – before it emerged that an alarm had been activated by mistake.

The Dutch Royal Military Police and other emergency services flocked to the scene, as rumors of a possible hostage situation spread.

The authorities said they were investigating a situation on a plane. Eyewitnesses reported that parts of the airport had been closed off and shared images of crowds and confusion.

Mark Crompton shared a photo from Amsterdam's Schiphol Airport of large crowds and confusion amid the suspicious situation at the airport.
from Twitter/Mark Crompton
Mark Crompton shared a photo from Amsterdam's Schiphol Airport of large crowds and confusion amid the suspicious situation at the airport.

But within an hour, the frenzy had faded, as police announced that all passengers and crew were safely off the plane, an Air Europa aircraft bound for Madrid.

The airline later said a security protocol had been activated by mistake.

“[The alert] started all protocols on hijacking at the airport. Nothing has happened, all passengers are perfectly OK and waiting to fly soon. We are sorry,” Air Europa tweeted.

The airport in the Netherlands’ capital is Europe’s third busiest, after London’s Heathrow and Paris Charles de Gaulle Airport. Around 6.5 million people pass through the airport every month, according to statistics published on Schiphol’s website.

CNN’s Amir Ahmed, Laura Perez Maestro, Majlie Puy de Kamp, Mick Krever and Claudia Rebaza contributed reporting.