UPDATE: Yale lab tech charged with murder expected to plead not guilty

NEW HAVEN, Conn.  —  A former Yale University lab technician charged with murdering a graduate student last month is expected to plead not guilty.

Twenty-four-year-old Raymond Clark III is due in New Haven Superior Court on Tuesday. He is accused of killing 24-year-old Annie Le of Placerville, Calif.

Le was a pharmacology graduate student who vanished Sept. 8 from a Yale medical lab building. Her body was found in the building five days later on what was supposed to be her wedding day.

Clark is accused of strangling Le and stuffing her body behind a basement wall. He worked as an animal lab technician, cleaning floors and mouse cages in the lab where Le worked. Police say it’s a case of workplace violence, but a motive isn’t clear.