The police said on its official Twitter account that three people had been wounded.
“Three people were injured in a knife attack on Grote Marktstraat,” the police said
Emergency services were at the scene, the city's police said in the statement, according to Reuters. The police are looking for a North African man, Reuters reported. Meanwhile, the Russian Embassy in the Netherlands said that Dutch police were searching for a black-clad man between the ages of 40 and 50 in connection with the attack in The Hague.
Dutch national broadcaster NOS said a knife attack in The Hague did not appear to be a terrorist attack.
A motive for the attack has not been established, but police are considering all possibilities, Dutch media said.
Later, the three minors who were injured as a result of a knife attack have been released from the hospital, local police said.
"All three victims of the stabbing at #GroteMarktstraat #TheHague were released from the hospital," the police Tweeted.
Earlier on Friday, a Metropolitan Police spokesman said in a statement that an attacker stabbed several people on London Bridge in the UK capital. The UK's top counter-terrorism officer said that British police shot a man dead on London Bridge in a terrorism incident, adding that the suspect was wearing a hoax explosive vest.