A powerful explosion in The Hague's Mariahoeve neighborhood caused the partial collapse of a three-story apartment building early Saturday. Four individuals have been rescued, with authorities searching for as many as 20 still unaccounted for. The cause remains unclear, but police are investigating a vehicle that fled the scene. Prime Minister Schoof and the Dutch royal family expressed their condolences to victims and emergency responders. Residents reported hearing a loud bang and screams, mistaking the event for an earthquake. Emergency services continue to manage the aftermath and rescue operations.