Dutch police said on Friday several people had been wounded in a stabbing on a shopping street in The Hague.
Police from the city said in a statement that emergency services were at the scene.
In a separate message, Hague police said they were seeking a man aged 45-50 and described him using a Dutch term often applied to people of North African descent.
Police said the man was wearing a shawl and wearing a gray tracksuit.
Similar incident took place in London, where two members of the public died after a knifeman wearing a hoax suicide vest launched a terror attack on London Bridge.
The suspect was shot dead by police after he stabbed "a number" of people in central London. Two of those people died and three were taken to two London hospitals.