Massachusetts State Police Trooper Nicholas Guarino reads entries from Brian Walshe's search history in court from the witness stand. Walshe, who denies killing his wife Ana Walshe, pleaded guilty last month to misleading police and improper conveyance of a human body. Her body has not been found.

The suspect in the Dec. 13 mass shooting on the campus of Brown University and the shooting of MIT professor Nuno Loureiro has been identified as 48-year-old Claudio Manuel Neves Valente, who was found dead by suicide inside a Salem, New Hampshire storage unit on Thursday night. A tipster who encountered Valente on a sidewalk outside Brown University and posted about it on Reddit provided crucial information that led to police identifying the suspect. CBS News' Tom Hanson breaks down what we kno