Quick Answer
CBSA Border Services Officers have legal authority under the Customs Act and the Immigration and Refugee Protection Act (IRPA) to detain and, in certain circumstances, arrest individuals at ports of entry. Detention can occur when a person is inadmissible to Canada, poses a flight risk, represents a danger to the public, or when their identity cannot be established.
Legal Basis for CBSA Detentions
CBSA officers do not have general law enforcement powers like police officers, but they do hold specific detention and arrest powers tied to their mandate at the border. These powers come from two primary statutes:
Customs Act — governs the examination of goods and people crossing the border. Officers can detain individuals for examination, seizure of goods, and customs-related offences.
Immigration and Refugee Protection Act (IRPA) — gives officers authority to detain foreign nationals and permanent residents in specific immigration-related circumstances.
For a broader look at officer powers, see CBSA Officer Powers & Legal Authority.
When Can CBSA Detain Someone?
Under IRPA, CBSA officers may detain a foreign national or permanent resident if there are reasonable grounds to believe the person:
- Is a danger to the public — poses a risk to persons or property
- Is unlikely to appear for an examination, hearing, removal, or other immigration proceeding (flight risk)
- Cannot have their identity established — is uncooperative or lacks documents to verify who they are
- Is inadmissible on serious grounds — such as security, human rights violations, or organized crime
Detention at ports of entry can happen during primary or secondary inspection. Officers do not need a warrant to detain someone at the border under these grounds.
Detention Review Process
A person detained by CBSA is entitled to a detention review before the Immigration and Refugee Board (IRB). The review schedule is:
- First review: within 48 hours of detention
- Second review: within 7 days if still detained
- Subsequent reviews: every 30 days thereafter
At each review, the IRB member assesses whether continued detention is justified. CBSA must present grounds for detention; the detained person can challenge them with legal representation.
Alternatives to Detention
CBSA and the IRB consider alternatives to detention before ordering someone held. These can include:
- Release on a performance bond (a sum of money paid by a bondsperson)
- Release to a co-signer who guarantees the person’s compliance
- Reporting conditions — regular check-ins with CBSA
- Electronic monitoring in certain circumstances
The IRB weighs alternatives at each detention review.
Arrests Under the Customs Act
For customs-related offences (e.g., smuggling, false declarations, undeclared currency), CBSA officers may arrest individuals without a warrant if they have reasonable grounds to believe an offence has been committed and the person is being found committing it or is about to escape. Arrested individuals are typically transferred to police custody when criminal charges are pursued.
Working with Police
CBSA officers work closely with the RCMP and local police at ports of entry. When an arrest involves criminal charges beyond CBSA’s jurisdiction, officers:
- Detain the individual and notify police immediately
- Preserve evidence and prepare reports
- May testify in subsequent criminal proceedings
CBSA’s criminal investigation branch handles more complex cases involving organized crime, smuggling networks, and serious criminality. See CBSA Criminal Investigations: How the Agency Investigates Serious Offences.
Frequently Asked Questions
Can CBSA detain Canadian citizens?
CBSA does not have immigration detention authority over Canadian citizens. Citizens cannot be denied entry to Canada. However, a Canadian citizen can still be examined under the Customs Act and potentially face customs-related charges.
How long can CBSA hold someone without a review?
No longer than 48 hours before a first detention review before the IRB must take place.
Do detained individuals have the right to a lawyer?
Yes. Detained individuals must be informed of their right to retain and instruct counsel without delay.
What happens to people detained long-term?
Prolonged detention is reviewed every 30 days by the IRB. Long-term detainees may challenge their detention through judicial review at the Federal Court if they believe detention is no longer justified.

