Madeline McCann's Disappearance Became a Global Media Sensation

German investigators probing the three-year-old's disappearance had hoped for a breakthrough 16 years later. German prosecutors who are leading this investigation have been fairly reticent with their information. There has been some media speculation that a former friend or acquaintance of the formal suspect called Christian Blückner provided some information which led to this investigation in the reservoir. He is currently serving a seven-year prison sentence in Northern Germany for the rape of a 72-year- old American woman, same area Madeline McCann went missing from.