Bryan Kohberger is challenging his conviction in the Idaho murders case after filing a petition for post-conviction relief on Monday. Kohberger is serving multiple life sentences for the killings of four University of Idaho students.

The filing adds a new chapter to one of the most closely watched criminal cases in the country. Kohberger, described as a former criminal justice doctoral student, is now asking the court to revisit the outcome after his conviction and sentencing.

A post-conviction relief petition is a legal step used to contest a conviction after a case has already reached judgment. Based on the available report, Kohberger's latest motion targets the conviction connected to the deaths of the four students, though the trimmed account does not outline all of the arguments in the filing.

The move means the Idaho murders case remains active in the courts despite the life sentences already imposed. Public attention has stayed high because of the scale of the case and its connection to the University of Idaho.