ARREST IN HONG KONG
Police Powers of Arrest
In Hong Kong, law enforcement agencies such as the Police and the Independent Commission Against Corruption (ICAC) have statutory powers to stop, search, question and arrest in defined circumstances. The precise power and legal threshold depend on the agency, the legislation being used and whether the officer is stopping, searching, detaining, questioning or arresting the person.
The sections below focus principally on Police powers under the Police Force Ordinance (Cap. 232). Separate legislation governs the ICAC and may confer different powers and safeguards.
STATUTORY POWERS OF ARREST AND SEARCH
The Police Force Ordinance
Police powers
Police powers are principally governed by the Police Force Ordinance (Cap. 232). The statutory threshold and the scope of the power depend on what the officer proposes to do. Section 54 addresses stopping, detention and searching in public places, while section 50 addresses arrest without a warrant.
Search safeguards
Before a search, the officer should explain the reason and intended scope of the search, so far as this can be done without prejudicing operational efficiency. A search of a detained person should generally be conducted by an officer of the same sex and in a manner that respects the person's dignity.
Further statutory powers
Specific legislation, including the Dangerous Drugs Ordinance (Cap. 134) and the Public Order Ordinance (Cap. 245), confers additional search and seizure powers in relation to matters such as dangerous drugs and offensive weapons.
WHEN CAN POLICE INITIATE A STOP AND SEARCH?
Section 54 of the Police Force Ordinance
Section 54 distinguishes between stopping a person acting suspiciously and the further power to detain and search where reasonable suspicion exists.
- Suspicious manner — section 54(1): Police may stop a person acting in a suspicious manner in a public place, require proof of identity and ask for an explanation of the person's conduct. The statutory wording and any related detention power must be applied to the particular facts.
- Objective reasonable suspicion — section 54(2): If an officer reasonably suspects that a person has committed, is about to commit or intends to commit an offence, the officer may search the person for anything likely to be of value to the investigation.
Specific legislation, such as the Dangerous Drugs Ordinance (Cap. 134) and Public Order Ordinance (Cap. 245), grants further powers for searches relating to drugs, weapons and other specified matters.
WHEN CAN POLICE INITIATE AN ARREST?
Arrest without a warrant under section 50
Under section 50(1) of the Police Force Ordinance, a police officer may arrest without a warrant a person whom the officer reasonably believes will be charged with, or reasonably suspects of being guilty of, an offence for which the sentence is fixed by law or for which a person may be sentenced to imprisonment on a first conviction. The section also covers an offence where service of a summons appears impracticable and a person reasonably suspected of being liable to deportation.
WHAT EXACTLY IS REASONABLE SUSPICION?
A genuine suspicion supported by objective grounds.
Reasonable suspicion sufficient to justify an arrest requires the arresting officer to hold a genuine subjective suspicion that is supported by objective factual grounds at the time of arrest. Hong Kong case law applies a two-part test.
Subjective element
The individual officer must genuinely and honestly suspect that the person has committed the relevant offence.
Objective element
The information known to the officer at that time must provide grounds on which a reasonable person could form the same suspicion.
Key characteristics of the standard
More than a mere hunch
A vague intuition, feeling or mere possibility of guilt is insufficient. There must be objective material capable of supporting the suspicion, such as observed conduct, physical evidence or sufficiently credible information. This distinction is reflected in Hong Kong authority, including Chan Sze-shing v Attorney General.
Lower than a prima facie case
The arresting officer does not need evidence sufficient to prove the offence, establish a prima facie case or secure a conviction. The arrest threshold is materially lower than the prosecution test and the criminal standard of proof beyond reasonable doubt.
Assessed at the time of arrest
The lawfulness of the arrest is assessed by reference to the facts and information available to the officer when the arrest was made. Evidence discovered only afterwards cannot retrospectively supply the missing grounds.
LEGAL RIGHTS AND SAFEGUARDS
Safeguards apply from the point of arrest.
Reason for arrest
An arrested person must be informed promptly, in clear language, that they are under arrest and of the substance of the reasons and grounds for the arrest.
Legal representation
A person in police custody is entitled to communicate privately with a lawyer and to have a lawyer present during a police interview. The Police notice states that these rights are subject to there being no unreasonable delay or hindrance to the investigation or administration of justice.
Access to bail
The general police guidance is that an arrested person should be released unconditionally or on bail as soon as practicable unless continued detention is justified. Relevant considerations include the seriousness of the offence, risk of absconding or repetition, interference with witnesses or the investigation, and obstruction of justice.
DETENTION AND QUESTIONING RULES
Detention must remain necessary and legally justified.
The 48-hour limit
For an ordinary arrest under the Police Force Ordinance, the person must be brought before a Magistrate as soon as practicable and, unless released earlier, within 48 hours of apprehension. The 48 hours is a maximum, not a default detention period. If the lawful purpose of detention has ended, the person should not be held merely because time remains. Different statutory regimes or a court order may affect the applicable position.
Right to silence
The right to silence is protected at common law and by the Hong Kong Bill of Rights. A suspect is not obliged to answer questions, although the circumstances and consequences of any decision should be considered with a lawyer. A person in custody should also be served with the Police's Notice to Persons in Police Custody or Involved in Police Enquiries (Pol. 153). The Notice should be read carefully and kept for reference: it explains important entitlements including access to a lawyer, communication with a relative or friend, receipt of a copy of a written record under caution, medical attention and the right to request release or bail. It complements, but does not replace, the formal caution and the right to silence.
See Police Interview for more details ↗Caution before questioning
Where there are reasonable grounds to suspect that a person has committed an offence, the person should be cautioned before questions about the offence are put to them. The caution explains that the person is not obliged to say anything, but that anything said may be given in evidence.
See Police Interview for more details ↗HOW MCS CAN ASSIST
Advice at the earliest stage of an investigation.
MCS can attend the police station and advise the clients before and during a cautioned interview, and make representations concerning release and police bail. Our legal team regularly attends police stations across Hong Kong upon the urgent instructions of an arrested person's family or friends, providing immediate on-site representation to accompany the suspect and guide them through the complex cautioned interview process.
OFFICIAL REFERENCES