Can a Mentally Ill Person Be Involuntarily Detained in Singapore?

Last updated on September 19, 2025

Suppose you have a loved one who is exhibiting signs of severe mental distress. You worry they might harm themselves or others, but they’re unwilling to seek help. What can you do, in such a situation?

In Singapore, the law allows the State to detain persons with, or suspected of having, mental health conditions, and who may be a risk to themselves or pose a danger to others, in a designated psychiatric institution for psychiatric assessment and treatment.

This article will discuss the following:

The Legal Framework: Mental Health (Care and Treatment) Act

Singapore’s primary legislation for managing an individual’s treatment for a mental disorder is the Mental Health (Care and Treatment) Act (MHCTA). Enacted in 2008, the MHCTA:

Allows for the admission and detention of any person who is suffering from a mental disorder; and
Who may be at risk of self-harm or causing harm to others in a designated psychiatric institution for mandatory psychiatric assessment and treatment.

This ensures that those who may not recognise their need for help can receive necessary care while safeguarding the community.

The MHCTA defines a “mental disorder” broadly as “any mental illness or any other disorder or disability of the mind.” This encompasses a wide range of conditions, from mood disorders to more severe psychiatric illnesses (e.g. schizophrenia, bipolar disorder).

According to the Government, from 2016 to 2020, the number of persons who have been detained and treated under the MHCTA for more than 72 hours and up to one month averaged 1,460 a year. An annual average of 128 and 14 were detained between 1-6 months and more than 6 months, respectively.

Involuntary Detention: What Does It Mean?

Involuntary detention refers to the legal process where the State is empowered to admit and hold individuals with mental disorders in psychiatric institutions without their consent. This measure is taken when they pose a danger to themselves or others, and refuse voluntary treatment.

It is crucial to distinguish between involuntary and wrongful detention. The former is a lawful intervention under specific circumstances outlined in the MHCTA, while the latter refers to unlawful confinement without proper legal justification. Examples of wrongful confinement include holding a person in a locked room for several hours to demand money from them or such that they are unable to leave the room.

Wrongful, or unlawful confinement, is a criminal offence under Singapore’s Penal Code and is punishable with a jail term and/or a fine.

When and How Can Someone be Involuntarily Detained?

Under the MHCTA, a person can be involuntarily detained if:

They are suffering from a mental disorder that necessitates treatment in a psychiatric institution; and
Their detention is necessary for their health or safety, or for the protection of others.

For instance, if someone threatens self-harm or exhibits violent behaviour due to a mental disorder, the authorities can intervene to detain the person to prevent potential harm.

What is the Involuntary Detention Process?

The detention process involves several steps:

Initial Detention (up to 72 hours): First, a designated medical practitioner at a psychiatric institution will examine the person. If they are of the opinion that the person is suffering from a mental disorder and should be treated as an inpatient at the psychiatric institution, they will sign an order to admit that person for treatment. The person may be detained for a period of 72 hours, beginning from the time the designated medical practitioner signs the order.
Extended Detention (up to 1 month): If further treatment is deemed necessary, another designated medical practitioner can extend the detention period for up to 1 month by signing another order (Form 2).
Further Extension (up to 6 months): A patient who has been detained for further treatment cannot be detained for any further period until an assessment is made by two designated medical practitioners working at the psychiatric institution. One of these medical practitioners must be a psychiatrist, and each practitioner is required to examine the patient separately. If they are both satisfied that the patient requires further treatment at the psychiatric institution, they will sign an order (Form 3), and the detention can be extended up to 6 months.
Application by Appointed Visitors: Regular inspections are conducted by Appointed Visitors, which comprise lay persons and doctors who are not staff of the psychiatric institution, to review the care and well-being of persons who are detained. These visitors may apply to the Magistrate for an order to prolong the period of detention by signing Form 4, after personally inspecting the patient and reviewing the report of the principal officer of the institution. The Magistrate can sign a detention order at their discretion, and the period of detention can be further extended for up to 12 months.

These structured stages also serve as safeguards to ensure that the detention is continually reviewed and justified, depending on the person’s progress with the treatment for their disorder.

Amendments to Police Powers of Apprehension of Persons Who Pose a Danger to Themselves or Others

In April 2024, Singapore’s Parliament passed amendments to the Law Enforcement and Other Matters Bill, enhancing police powers concerning individuals with mental disorders.

These amendments set out when the police can intervene when they are called to assist in cases where a person may harm themselves or others around them, and there is reason to believe that the better course of action is apprehension (bringing the person to be assessed by a medical practitioner), rather than arrest (bringing the person to a lock-up).

Previously, the police could only apprehend such individuals if they posed an “imminent” danger. Such a situation, for example, might involve a person suffering from a mental disorder who goes to a public place, brandishing a knife and charging at passers-by to hurt them.

The amendments now allow intervention if the danger to life or personal safety is reasonably likely to occur either to themselves or to others. For example, the person is threatening to commit suicide (i.e. harm to themselves), or is conducting themselves in a manner which may hurt their family or members of the public nearby.

One such case cited in Parliament as an example involved a 73-year-old man who was found to be in possession of an ice pick and a knife at a police station. When asked why he was carrying those items, he had replied that foreign law enforcement agencies were disturbing his sleep and he would use the ice pick and knife to tell them to leave him alone. Police apprehended him under the MHCTA, and brought him to the Institute of Mental Health for medical treatment.

This case is an example where danger to the elderly man himself or others around him could be reasonably likely to occur – even though there is no immediate or imminent threat (i.e. he was found to be carrying the weapons but was not brandishing the weapons nor did he charge at the police officers with the weapons in his hand to stab or hurt them when he was caught).

The amendments therefore seek to strike a balance between protecting public safety, and ensuring persons with mental disorders are given the treatment that they need to preserve their own wellbeing.

Safeguards and Rights of Persons with Mental Disorders Who are Apprehended

As mentioned above, there are stringent safeguards in place to prevent abuse of process and ensure that the rights of persons with mental disorders are protected, should they need to be detained (e.g., ensuring that they are not detained for longer than required). These safeguards include:

Regular reviews: Detentions are subject to periodic reviews after the stipulated period of detention to assess the necessity of continued confinement, with legally prescribed limits on the length of time for which a person can be detained at each instance.

Visitors’ Board: As mentioned earlier, the Visitors’ Board comprises laypersons (who do not necessarily have to be medically qualified) and doctors who are not affiliated with the institution to review patients who have had their detention periods extended. They determine if a patient’s detention period needs to be further prolonged, and have the authority to discharge patients if detention is no longer justified.

These visitors are appointed by the Minister of Health.

Practical Advice for Families and Caregivers of Persons with Mental Disorders

If you’re concerned about a loved one’s mental health, here are some steps that you can take:

Know where to seek help: Contact the Institute of Mental Health’s 24-hour helpline or visit IMH 24-hour Emergency Services if you require medical help. Alternatively, for 24/7 mental health support, you can also reach out to the national mindline at 1771, Singapore’s first national mental health helpline and textline service.
Maintain medical records: Keep a record of the individual’s medical history (e.g., medications taken or prescribed, treatments they’ve undergone) to assist healthcare professionals in providing appropriate care.
Be aware and informed: Familiarise yourself with the MHCTA and available mental health resources to help you better navigate the system and empower you to make informed decisions in the event your loved one suffers a mental health crisis.

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Balancing individual rights with public safety is a delicate task. Singapore’s legal framework, particularly the MHCTA and 2024 amendments, strives to provide necessary care for individuals with mental disorders while protecting the community. By understanding these laws and available resources, families and caregivers can better support their loved ones with mental disorders during challenging times.

For further assistance, loved ones and caregivers can consider reaching out to:

Institute of Mental Health (IMH): Offers comprehensive mental health services and a 24-hour helpline.
Agency for Integrated Care (AIC): Provides information on community mental health resources.

Remember, seeking help is a sign of strength, and there are numerous resources available to support you and your loved ones.