Five people injured, police say

Five people were injured after a stabbing in Central Amsterdam, police say.

The Dutch police claims that the area, which includes the Dam Square, was fenced and an emergency helicopter was located.

The suspect has been arrested, but the motive remains unclear, police say.

There are no details about the condition of the wounded.

A video posted on social media shows the helicopter in front of the Royal Palace on Dam Square and emergency vehicles also inside the fence area.

Police calls on anyone with images of the incident to upload them as evidence.