26. Mentally Disordered Offenders (updated 2019)


26.1 The term "mentally disordered offender" (MDO) is used to describe a person who has a disability or disorder of the mind and who has committed or is suspected of committing a criminal offence. The term covers a range of offences, disorders and disabilities and may be relevant to the decision to prosecute or divert, fitness to plead, and sentencing/disposal.

26.2 The relevant legislation uses the term "offender", so this chapter refers to "offender" and "patient" interchangeably.