Military police had tweeted: "Man at Schiphol shot at by the military police, after he made threats with a knife".
Update 6.11pm:A man with a knife walked into the police service's office at an Amsterdam airport and threatened staff with a knife, military police say. Situation secure with best rates guaranteed.
"The suspect in the incident is a 29-year-old man from The Hague", police said in a tweet.
A spokesperson for the airport said that the plaza, which contains bars, restaurants and shops was evacuated but the sections behind check-in desks and security were not evacuated.
Officers shot the man in the leg and arrested him before transporting him to a hospital. Air traffic has not been affected.
"We. have many questions", Verberkt said.
Police Shoot Knifeman at Amsterdam's Schiphol Airport, Building Evacuated
Schiphol is one of Europe's busiest airports and Friday is one of its busiest days of the week.
Police were seen swarming towards a Starbucks coffee outlet before shots were fired.
The man would have smashed a window; the situation is safe now and the motive of the man is unknown yet, reported Dutch television NOS.
"They heard several shots and some of them ran for the exit, while others ran into the kitchen", he told AFP.
It has since been reopened with officials reporting no further delays to flights.
The area of Schiphol Plaza was evacuated for 20 minutes.More news: Grassley requests immigration history of NY bombing suspect