Prosecutors say Bryan Kohberger’s Amazon click history shows him buying a knife similarly used in the Idaho murders.

Prosecutors say the man charged in the stabbing deaths of four University of Idaho students​ bought a knife and sheath online in the months before the killings.

Bryan Kohberger, the graduate student accused in the brutal murders of four University of Idaho college students, took a grinning selfie with a thumbs-up shortly after the slayings, according to a prosecutor's filing in court.