Informer – a person who supplies information to the police. (Victoria)
Informant – the police officer or government official who charged a suspect and who will give evidence against them in court. (Victoria)
Lead – something serving as a tip, indication or clue to the crime.
Person of interest – refers to someone the police would like to speak with or investigate further in connection to a crime.
Prime suspect – the person police suspect committed the crime.
The Jacks – a colloquial term for police.
Polygraph Test – a test used by police to help determine whether someone is telling the truth by measuring their breathing, pulse rate and other physiological responses while being questioned. Not admissible as evidence in court.
Inquest – A formal court hearing conducted by a coroner with or without a jury into the circumstances of an examinable or reportable death or a fire or explosion.
Committal Hearing – a hearing to determine if there is sufficient evidence to warrant the person charged with an offence being required to stand trial.
Remand – to stand a matter over until a future date and as a consequence return the accused to custody or to continue bail.
Trial – a fact-finding process by which a court resolves disputed issues of fact presented by the parties and applies appropriate legal rules, culminating in a judgement.
Jury – A group of people who swear to fairly determine an issue of fact. A jury typically consists of 12 people in a criminal trial.
Custody – confinement or imprisonment.
Conviction – finding an accused person guilty of the offence charged.
Parole – the release of a prisoner from custody, after the completion of a minimum period of imprisonment determined by a court so the prisoner may serve the rest of the sentence on conditional liberty.