Bryan Kohberger was sentenced to life in prison on July 23 after he pleaded guilty earlier this month to killing four University of Idaho students in 2022.

The former criminal-justice doctoral student convicted in the 2022 stabbing deaths of four University of Idaho students was sentenced to life in prison on Wednesday but declined to give a statement in court that might have shed light on a motive for the killings.

Bryan Kohberger received four life terms after the victims’ families and friends faced him in court. He declined to speak, and investigators said they remained mystified by his motives.