A former defense expert for Bryan Kohberger says investigators missed key evidence and is now calling for the death penalty. The expert argues that cell phone data shows evidence of stalking, which he says conflicts with an earlier expert report he produced in Kohberger’s case. According to the reporting, the expert’s view represents a change from his prior involvement, and he points to phone-related information as central to his conclusion. The expert’s comments also raise questions about how investigators handled or interpreted evidence during the investigation and early case preparation. The reports do not indicate that a court has adopted the expert’s conclusions, and they do not detail additional evidence beyond the claim about cell phone data and stalking indicators. The case remains subject to ongoing legal proceedings, and any expert opinion is part of the broader set of arguments presented by both the defense and the prosecution. No definitive findings are described in the provided summaries.