A discarded cigarette found near the body of a 24-year-old US school teacher in her apartment nearly 52 years ago has helped lead investigators to an upstairs neighbour who they say strangled her after having a fight with his wife.
Burlington Police DNA evidence collected from the cigarette butt and dogged investigative work led Vermont authorities to the man they say killed Rita Curran within a 70-minute window on a July night in 1971.
