A flurry of court filings in the quadruple murder case against Bryan Kohberger reveal the suspect bought a knife on Amazon months before the killings and the victims’ surviving roommates texted family and were active on social media before calling 911.

Accused murderer Bryan Kohberger sought to purchase a “replacement” knife after he allegedly killed four University of Idaho students, according to court documents released this week. In the initial review of the material,