A 66-year-old US citizen is in custody in the United States after a matching fingerprint connected him to the long-unsolved killing of a woman in Germany in 1978. The man had been stationed in Germany as a young US soldier at the time when – on June 11, 1978 – a 35-year-old woman was killed in her apartment with more than 30 stab wounds in the town of Ludwigsburg in south-west Germany. German authorities have not released his name, in line with privacy rules in the country. German investigators have accused him of murder. Prosecutors in Stuttgart requested that the suspect be extradited to Ger…