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Alibi

Defence of being elsewhere when a crime happened

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Through Crime and Affair

During a criminal trial, an alibi is a defence raised by the accused as proof that they could not have committed the crime because they were in some other place at the time the alleged offence was committed. The Criminal Law Deskbook of Criminal Procedure states: "Alibi is different from all of the other defences; it is based upon the premise that the defendant is truly innocent."

Duty to disclose

In some legal jurisdictions there may be a requirement that the accused disclose an alibi defence prior to the trial. This is to enable the investigators to verify whether or not such a claim is true. This is an exception to the rule that a criminal defendant cannot normally be compelled to furnish information to the prosecution. Since the alibi involves evidence of innocence rather than guilt, the privilege against self-incrimination is not implicated.

In Canada, the defence must disclose an alibi defence with sufficient time for the authorities to investigate the alibi, and with sufficient particularization to allow for a meaningful investigation. Failure to comply with the two requirements will result in the court making an adverse inference against the alibi defence (but will not result in the exclusion of the alibi defence).

Conversely, some judges in other jurisdictions have held the opinion that the mandatory early disclosure of alibis is unfair, possibly even unconstitutional.

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