Officers hopeful of closing investigation into four men who stole jewels, despite a river search failing to provide clues

Police have said they remain confident of arresting four men who stole jewels worth tens of millions of euros in broad daylight at Maastricht art fair, despite a search of a Belgian river failing to yield any clues.

Belgian and Dutch police, including underwater divers, spent about three and a half hours on Monday searching a river in the Belgian city of Verviers, in an attempt to find items the robbers were thought to have ditched after the crime in June 2022.