NEW HAVEN, Connecticut (CNN)  -- A quiet rendition of "Amazing Grace" capped an emotional candlelight vigil Monday night for slain Yale University student Annie Le, whose body was found on what was to have been her wedding day. Students at Yale attend a candlelight vigil for Annie Le Monday night. Several hundred people turned out on the Yale campus for the vigil, crying and hugging each other. Le's roommate, Natalie Powers, said the 24-year-old graduate student in pharmacology "was as good a human being as you'd ever hope to meet." "She was also really tenacious and had a sense of humor that was never far away, and she was tougher than you'd think by just looking at her," Powers said.
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NEW: Roommate says horrible tragedy is "incomprehensible"
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Grad student Annie Le's remains found Sunday in basement wall in building
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Le, 24, was last seen entering the building Tuesday morning
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Police: No suspects in custody, but investigators questioning several people
Kaplan said a @placeholder police official told the newspaper the clothes were not what Le was wearing when she entered the building.