plea of insanity

Translations
заявление о невменяемости
The defense lawyer entered a plea of insanity on behalf of their client.
Адвокат защиты подал заявление о невменяемости от имени своего клиента.
Definitions
A legal defense strategy in which a defendant claims that they were not responsible for their actions due to a severe mental illness or disorder at the time of the crime, thereby arguing that they should not be held criminally liable.