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NSWLegal StudiesSyllabus dot point

How does the criminal investigation process balance the powers of the state against the rights of the suspect?

Investigate the criminal investigation process, including police powers, the arrest process, the right to silence, and the bail decision

A focused answer to police powers and the criminal investigation process in NSW. Covers LEPRA powers (search, arrest, detain), the rights of suspects (right to silence, caution), the bail decision under the Bail Act 2013 (NSW), and recent NSW bail reforms.

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What this dot point is asking

NESA wants you to know the powers police have to investigate offences in NSW, the rights of suspects, and how the bail decision is made. Expect this material in a Section II 5-7 mark question, or as part of a Section II extended response on the effectiveness of the criminal investigation process.

The answer

Police powers under LEPRA

In NSW, police powers are codified in the Law Enforcement (Powers and Responsibilities) Act 2002 (NSW) (LEPRA). The key powers:

  • Stop, search and detain. LEPRA Part 4. Police may stop and search a person if they reasonably suspect the person is carrying a stolen item, prohibited drug, weapon, or anything used or intended to be used in an indictable offence (s 21).
  • Strip search. LEPRA s 31 to s 33. Permitted only if reasonable suspicion exists and a strip search is reasonably necessary, with separate rules for under-18s.
  • Arrest. LEPRA s 99. A police officer may arrest a person without warrant if they reasonably suspect the person has committed or is committing an offence and arrest is reasonably necessary.
  • Detain for investigation. LEPRA Part 9. After arrest, police may detain an arrested person for a reasonable investigation period (up to 6 hours, extendable by warrant under s 118).
  • Use reasonable force. LEPRA s 230 authorises reasonable force in exercising any LEPRA power.

Rights of the suspect

  • Right to silence. A suspect is not obliged to answer questions other than identifying themselves. The standard caution given before questioning ("you do not have to say or do anything but anything you do say or do may be used in evidence") preserves this right. Adverse inferences from silence are limited; the Evidence Act 1995 (NSW) s 89 restricts most adverse comment.
  • Right to legal representation. A suspect may communicate with a lawyer once detained (LEPRA s 123).
  • Right to communicate with a friend or relative. LEPRA s 123.
  • Right to an interpreter where needed (LEPRA s 128).

The bail decision

Bail is the release of an accused person on conditions pending the next court date. Governed in NSW by the Bail Act 2013 (NSW).

The unacceptable risk test (s 17)
The bail authority refuses bail if there is an unacceptable risk that the accused will fail to appear, commit a serious offence, endanger any person, or interfere with witnesses or evidence. Bail conditions can be imposed to mitigate risk.
Show cause offences (s 16B)
For specified serious offences (e.g. murder, serious drug offences, offences while on bail for other serious offences) the accused must "show cause" why their detention is not justified before the unacceptable risk test is applied. Show cause categories were expanded in 2014 amendments.
Recent NSW bail reforms
The Bail Amendment Act 2022 (NSW) and subsequent amendments tightened bail for repeat offenders and for offences while on bail. Critics including the Aboriginal Legal Service NSW/ACT argue the reforms increase remand of Indigenous accused; the 2023 NSW Bureau of Crime Statistics and Research (BOCSAR) report on remand trends documented a sustained rise in the remand population.

Past exam questions, worked

Real questions from past NESA papers on this dot point, with our answer explainer.

2022 HSC6 marksEvaluate the effectiveness of the criminal investigation process in balancing the rights of suspects with the needs of society.
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A 6-mark response needs a sustained judgement, real legislation, at least one case or media example, and explicit reference to rights and to society.

The criminal investigation process is governed in NSW principally by the Law Enforcement (Powers and Responsibilities) Act 2002 (NSW) (LEPRA) and the Bail Act 2013 (NSW). It is moderately effective at balancing competing interests.

Strengths. LEPRA s 21 requires reasonable suspicion before a search. LEPRA s 99 sets out the lawful basis for arrest. The right to silence is preserved at common law and through the standard caution. The Bail Act 2013 (NSW) s 17 requires the bail authority to consider bail concerns and unacceptable risk. The 2014 amendments adding "show cause" offences under s 16B targeted serious offending while preserving the presumption in favour of liberty for less serious offences.

Limitations. Section 21A of the Bail Act 2013 (NSW), inserted in 2014, expanded the categories of "show cause" offences and shifted the onus onto certain accused persons. Critics including the NSW Bar Association argued this disproportionately affected Indigenous accused: the Australian Bureau of Statistics reports Aboriginal and Torres Strait Islander people are over-represented at every stage of the process.

Stop-and-search powers under LEPRA Part 4 have been criticised for over-use; the 2020 Law Enforcement Conduct Commission report on strip searches found a substantial proportion of strip searches were conducted without sufficient legal basis.

Judgement. The process is moderately effective. Statutory rights and the requirement of reasonable suspicion provide important protections, but the expansion of "show cause" categories and disproportionate use of search powers limits effectiveness for some groups. Continued NSW Law Reform Commission review is needed.

Markers reward a clear thesis, structured paragraphs, real statutes, a specific case or report, and a defensible final judgement.

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