Dutch police are continuing to look for an attacker who stabbed three teenagers on a street in The Hague that was crowded with Black Friday shoppers.

The victims, two 15-year-old girls and a 13-year-old boy, were treated in a hospital and released late on Friday. Police spoke to the victims who said they did not know each other.

“We are using all our available means – visible and unseen – to find the suspect in this stabbing as soon as possible,” police said, including examining video footage from the area, where many surveillance cameras are located.

Dutch police say the motive for the stabbing remains unknown and they “are keeping all scenarios open”.

The stabbing occurred at about 7.45pm in an area teeming with shoppers and close to the city’s most popular nightlife centres.

Police cordoned off the area until deep into the night as forensics experts combed the street for evidence and they have also appealed for witnesses to come forward.

The street was opened again on Saturday.