Police intelligence can provide a proper foundation for a search, but it must be evaluated carefully. A recent South Australian District Court decision shows why an allegation, combined with an old database entry describing someone as an “associate”, may not be enough to justify searching their home. It also shows why police cannot validate an unlawful search simply because they “got lucky” and found incriminating evidence.

What made the case particularly unusual was that the occupant had no criminal history and the home had never attracted police attention. Rather than treating those facts as weighing against the intelligence, the detective considered that they supported a theory that the property was being used as a “safe house” precisely because it was unlikely to attract suspicion. The Court found that, without reliable and current information connecting the occupant to the suspected criminal activity, that theory remained conjecture.

Police cannot validate an unlawful search simply because they “got lucky” and found incriminating evidence.

Can police search your home because you are someone’s associate?

Being described as someone’s “associate” does not, by itself, give police reasonable grounds to search your home. The nature, relevance and currency of the association all matter.

In R v Rashleigh, police received intelligence that another man was storing firearms and methylamphetamine at a home in Morphett Vale. The occupant of the home had no criminal history, and neither he nor the address was otherwise known to police as being connected with criminal activity.

The detective investigating the information searched SHIELD, SAPOL’s internal records system, which contains information about incidents, people, addresses and police intelligence. He found an occurrence report from approximately 18 months earlier which described the occupant as an “associate” of the man named in the intelligence. That entry became the essential link in the reasoning used to justify searching the home.

The problem was that the word “associate” explained almost nothing. It did not reveal how the two men knew each other, whether they remained connected or whether their relationship had anything to do with drugs, firearms or any other criminal activity.

What information do police need before searching a home?

Police need information capable of creating a reasonable suspicion that an offence, evidence or a relevant item is connected with the home they intend to search. The detective in this case held what is known as a general search warrant. Unlike a warrant issued specifically for one property, it authorised him to search premises when he had reasonable cause to suspect that one of the circumstances specified by law existed—for example, that the premises contained evidence of an offence. It did not give him an unrestricted power to search any property he chose. The legal conditions for using the warrant still had to be satisfied each time it was exercised.

Reasonable suspicion is less demanding than proof or even a belief that something is probably true. Police do not need evidence establishing that drugs, weapons or other items will definitely be found. There must, however, be objective supporting material and a rational connection between that material and the suspicion. A hunch, speculation or what courts have called “idle wondering” is not enough.

That requirement is particularly important when the proposed search involves a person’s home. Search powers permit conduct that would ordinarily be an unlawful intrusion onto private property. The safeguards governing those powers therefore have practical work to do.

Can police rely on intelligence reports to conduct a search?

Police can rely on intelligence reports, but they must assess whether the information is sufficiently reliable, current and relevant to the proposed search. An intelligence grading is important, but it does not remove the need to examine the substance of the information.

The original intelligence in this case was graded as coming from a “mostly reliable” source who had personal knowledge of the information. Even so, there were substantial gaps. Police did not know how recently the information had been obtained. They could not determine whether the source had supplied the Morphett Vale address or whether it had been added later following police enquiries. They also did not know whether the occupant was still living at the property when it was searched.

Most critically, the detective needed information connecting the occupant with the man suspected of storing the drugs and firearms. The only material he found was the 18-month-old occurrence report. The SHIELD audit showed that he spent no more than 25 seconds examining it.

The Court found that the detective had fastened on the word “associate” in haste without properly scrutinising its meaning or context. The database entry was untested, vague and stale. It did not establish a current association, much less an association that reasonably suggested one man was permitting the other to use his home to store drugs and firearms.

What amounts to reasonable suspicion for a police search?

Reasonable suspicion requires more than a possible chain of inferences: the available information must be capable of producing the suspicion in the mind of a person thinking reasonably about it.

The occupant’s lack of criminal history did not provide evidence of criminal activity. Nor could the fact that the address was unknown to police transform it into a suspected safe house. Those circumstances might have been consistent with the detective’s theory, but they did not independently support it. Without a sufficiently strong and current connection between the two men, the safe-house theory remained conjecture.

The Court did not find that the detective was dishonest. It formed a favourable impression of him and accepted that he had tried to tell the truth. Nor did it characterise his overall investigation as a deliberate attempt to cut corners. The difficulty was narrower: he acted too hastily and with a degree of recklessness when assessing the one piece of information essential to the search.

There was no evidence of urgency or any immediate risk that evidence would disappear. Further database enquiries or surveillance could have been undertaken before the home was entered. The Court concluded that the information available at the time did not amount to reasonable suspicion and that the search was unlawful.

Does finding drugs or firearms make an unlawful search lawful?

No. The lawfulness of a search depends on what police knew before exercising the search power, not on what they happened to discover afterwards.

Police found a substantial quantity of methylamphetamine, three handguns and ammunition hidden inside the home. Those discoveries provided cogent evidence of serious alleged offending, but they could not retrospectively supply the reasonable suspicion needed to enter the property.

In explaining this point, the Court referred to an earlier decision which warned against allowing an authorised search to be justified whenever an officer “gets lucky” and finds persuasive evidence. If the result of a search could cure the absence of lawful grounds for conducting it, the statutory safeguards would become meaningless: unsuccessful unlawful searches would be forgotten, while successful ones would be excused.

Is evidence from an unlawful police search automatically excluded?

Evidence obtained unlawfully is not automatically excluded. The Court must balance competing public interests under what is commonly called the Bunning v Cross discretion.

On one side is the community’s interest in investigating and prosecuting serious crime. On the other is the need to protect individuals from unlawful conduct by those entrusted with enforcing the law and to preserve the integrity of the justice system. The seriousness of the charge and the strength of the evidence are relevant, but neither is decisive.

In this case, the Court recognised the seriousness of the alleged offending and accepted that the illegality did not make the physical evidence less reliable. It nevertheless excluded the evidence. The search had unlawfully intruded into a private home, the critical intelligence had not been evaluated with the necessary care, further enquiries were available and there was no urgency. Admitting the evidence would risk appearing to approve the inadequate use of information on which the search depended.

What can happen if police search your home unlawfully?

Evidence obtained during an unlawful search may be excluded, but the result depends on the particular circumstances. A court will consider how the search came to be unlawful, the conduct of the officers, the seriousness of the alleged offence, the importance and reliability of the evidence, and whether police could readily have complied with the law.

If important evidence is excluded, the prosecution may be unable to prove the charges. It is important, however, to distinguish that possible consequence from the ruling in this case. The published decision records that the search evidence was excluded; it does not record a final acquittal or dismissal of the charges.

A challenge to a police search often turns on details that are not apparent from the items ultimately found. Police notes, database audit records, intelligence reports, body-worn video and the precise sequence of events may reveal whether reasonable grounds existed before the search began. You can read more about police search powers and your rights in South Australia in our comprehensive guide.

If you have been charged following a search of your home, vehicle or person, obtaining advice early can help identify whether the search power was lawfully exercised and what consequences may follow if it was not.

R v Rashleigh [202] SADC 110