An exceptional reduction in sentence, which may amount to up to one third of the sentence imposed, may be granted to convicted persons who, during their detention, including pre-trial detention, have prevented or put an end to any individual or collective action likely to seriously disrupt the maintenance of good order and security in the establishment or to endanger the life or physical or psychological integrity of prison staff or inmates in the establishment. In the case of those sentenced to life imprisonment, an exceptional reduction in the probation period provided for in the ninth paragraph of Article 729, the quantum of which may be up to five years, may be granted.
For sentenced persons serving one or more custodial sentences of a total duration of more than seven years, these exceptional reductions are granted by the sentence enforcement court, at the request of the sentenced person, at the request of the head of the establishment, at the request of the public prosecutor or at the initiative of the sentence enforcement judge to whom the sentenced person is subject pursuant to article 712-10, in accordance with the procedures set out in Article 712-7.
For sentenced persons serving one or more custodial sentences of a total duration of less than or equal to seven years, these exceptional reductions are granted, after the opinion of the Sentence Enforcement Commission, by reasoned order of the Sentence Enforcement Judge, acting ex officio, at the request of the sentenced person, at the request of the head of the establishment or at the request of the public prosecutor, in accordance with the procedures set out in article 712-4-1.