Police divers searched a canal in Belgium on Thursday as officers "relaunched" an investigation into a baffling series of murders that has gripped the country for more than 30 years.
Known as the Brabant Killers, assailants firing pump-action shotguns killed 28 shoppers and wounded hundreds more in attacks on supermarkets and hostels during a string of robberies in the Brussels area between 1982 and 1985.