Questione giuridica chiave
Whether the complaint about diminished responsibility and the psychiatric expert report was admissible in nullity proceedings
Decisione estratta
The challenge was inadmissible insofar as it attacked factual findings and the assessment of the psychiatric expertise rather than a federal-law error.
Motivazione estratta
Responsibility as found by the cantonal court is a factual determination binding on nullity review; objections to the value or interpretation of the expertise are issues of evidence assessment and cannot be reviewed in nullity.