NEW YORK (CBS) As police confirm the female body found stuffed behind a wall of a Yale laboratory building is missing graduate student Annie Le, a police source close to the investigation has told CBS News' Crimesider that they have narrowed their investigation down to one suspect and that the person is currently being questioned by police.
The source told CBS News' correspondent Randall Pinkston that the suspect has failed at least one polygraph lie detector test and possibly more. The suspect has not been formally charged, but is not at large.
The victim, 24-year-old Le, and the suspect may have known each other, says the source.
Police are currently analyzing what they're calling "a large amount" of physical evidence.
Le worked in a lab in the five-story building's basement. Campus officials have said that the security network recorded Le entering the building by swiping her ID card about 10 a.m. on Sept. 8, and had been baffled that she was not seen leaving. That changed Sunday, when a woman's body was found stuffed into a "chase space" behind a wall where cables could be accessed.
Annie Le's body was found on the very day she was scheduled to marry her fiancé Jonathan Widawsky on Long Island, New York.
The university has planned a candlelight vigil at 8 p.m. Monday at the university.
For more on this story as it develops, watch Randall Pinkston tonight on the CBS Evening News.
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