UK authorities asked members of Portuguese police to conduct investigations . The program prompted a flurry of tips , and police in Portugal announced that same month that they would reopen the case . The Scotland Yard investigation is focused on three people , Portuguese police say . The potential development came just months after a renewed push for leads began .
UK authorities asked members of Portuguese police to conduct investigations . The Scotland Yard investigation is focused on three people , Portuguese police say . The potential development came just months after a renewed push for leads began .