The Virginia State Police Bureau of Criminal Investigation’s Salem Field Office is continuing its efforts to identify a motive in the murder-suicide that occurred Dec. 8, 2011, on the Virginia Tech campus. State police investigators worked through the weekend and on into this week interviewing family, friends and acquaintances of Ross T. Ashley, 22, in order to piece together his movements and actions leading up to the murder of Virginia Tech Police Officer Deriek W. Crouse.

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