Bryan Kohberger declined to share his reason behind the horrific killings of the Idaho Four at his Wednesday, July 23, sentencing hearing – but former FBI agent Jennifer Coffindaffer has a theory. Kohberger,

Steve Goncalves said lead detectives spoke to them for three hours this week, answering questions about the University of Idaho murders.

The documents illustrate the frenzied efforts by law enforcement to follow every possible lead to find and convict Kohberger.

Bryan Kohberger will spend the rest of his life behind bars after pleading guilty to the brutal murders of Ethan Chapin, 20, Xana Kernodle, 20, Madison Mogen, 21, and Kaylee Goncalves, 21. In the wake of his sentencing hearing,

Idaho murderer Bryan Kohberger begins serving multiple life sentences as victims' families delivered powerful impact statements ranging from forgiveness to condemnation.

Alivea Goncalves, the older sister of the late Kaylee Gonclaves, spoke to him during the hearing, as he sat stoically in an orange jumpsuit.

It's the tragic case that gripped a nation for three years, and Bryan Kohberger has finally been handed four life sentences for the murders of four University of Idaho students: Kaylee Goncalves, Ethan Chapin,