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(Updated 10:40 a.m.) Cops picked up a 24-year-old Yale lab technician early Thursday and charged him with strangling a Yale grad student to death and stashing her body in a basement wall—what the chief’s calling a “workplace crime,” not a “romantic” one.

Raymond J. Clark III, 24, of Middletown, was charged with murder and held on a $3 million bond, said New Haven Police Chief James Lewis. Clark cleaned mouse cages in a Yale medical school building where Le, a 24-year-old Yale pharmacology student, did experiments.

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