Yale Graduate Student Murder

Sept. 17: Police officers arrest Raymond Clark III, left, at the Super 8 motel in Cromwell, Conn., for the killing of Yale graduate student Annie Le. (AP2009)

Sept. 17: Police officers arrest Raymond Clark III, left, at a motel in Cromwell, Conn., for the murder of Yale graduate student Annie Le.

Sept. 17: Police officers arrest Raymond Clark III, left, at a motel in Cromwell, Conn., for the murder of Yale graduate student Annie Le.

Sept. 16: New Haven Police Chief James Lewis briefs the media at police headquarters during a news conference about the murder of Yale graduate student Annie Le.

Annie Le, 24, a pharmacology doctoral student at Yale University. Le disappeared Sept. 8, less than a week before her wedding. Her fiance, family and friends haven't heard from her since. (Photo: Yale University Office of Public Affairs)

Surveillance camera footage captured Annie Le about 10 a.m. Tuesday Sept. 8 just before she entered a lab facility a few blocks from her office in the Yale School of Medicine complex. No images have been found of her leaving the building. (Photo: Yale University Office of Public Affairs)

Sept. 10: Members of Yale's security force in front of the New Haven, Conn., building where missing graduate student Annie Le had her laboratory. The facility is the last place Le was seen before she vanished. (Photo: AP)

A billboard bearing a photo of missing Yale graduate student Annie Le has been put up along Interstate 91 in New Haven, Conn. (Photo: AP)

A flyer of missing Yale graduate student Annie Le is posted outside the doors of the New Haven, Conn., building that houses her lab, where she was last seen Sept. 8. (Photo: AP)