Also known as:alibi defence · alibi defenses · alibi defences · alibi
Written by attorneys · grounded in primary & secondary sources — see below
A criminal defense asserting that the defendant was not present at the scene of the alleged offense at the time it occurred. The defense requires the defendant to provide timely written notice identifying each specific location claimed and the name, address, and telephone number of each intended witness. Failure to comply permits the court to exclude undisclosed alibi testimony while preserving the defendant's own right to testify.
Sources & Authorities· 9 primary sources
Select any source to read its text and confirm it supports the definition.
Cases
Federal Rules
Hornbooks
Study Supplements
How it applies
Common Examples
6
Government Request Triggers Notice
Antonio Alvarado faced charges for submitting false Medicare claims over a weekend. The government served a written request specifying the dates and location. Alvarado's counsel responded with a vague letter claiming he was out of town. The court later considered whether the response satisfied the obligation to notify the government of an intended alibi defense.
Timely Written Notice Required
Angela Acosta stood trial for sabotaging equipment on a specific night. After the government demanded notice, her attorney filed a response within fourteen days listing only her spouse as an alibi witness. The filing identified the claimed location and contact details, allowing the government to investigate before trial.
Witness Contact Information Mandatory
Alan Ackerman was indicted for arson. His notice listed three coworkers but omitted their addresses and telephone numbers. The government moved to exclude the witnesses because the required contact details had not been supplied in the alibi disclosure.
Late Disclosure Without Good Cause
Austin Abbott sought to add new alibi witnesses after receiving delayed employment records. The district court excluded the testimony because the defense had not shown good cause for missing the deadline and had failed to supplement the original notice promptly.
Maine v. Moulton474 U.S. 159 (1985)
Reciprocal Discovery Obligation
Anthony Arnold served timely alibi notice naming two coworkers. The government then disclosed its rebuttal witnesses within fourteen days. The exchange allowed both sides to prepare for trial without surprise.
United States v. Feola420 U.S. 671 (1974)
Withdrawn Notice Protection
Adrian Aguilar filed an alibi notice and later withdrew it after new evidence emerged. At trial the government could not introduce the withdrawn notice or related statements against him.
Manson v. Brathwaite432 U.S. 98 (1977)
Common questions
Frequently Asked
5
What must a defendant's alibi notice contain under Rule 12.1?+
The notice must state each specific place where the defendant claims to have been and the name, address, and telephone number of every intended alibi witness. The government may request this information in writing after specifying the time, date, and place of the alleged offense.
Supporting sources
When may a court exclude alibi witness testimony?+
A court may exclude the testimony of any undisclosed alibi witness if the defendant fails to comply with the notice requirements. The rule authorizes this sanction to prevent unfair surprise and to allow the government time to investigate and prepare rebuttal evidence.
Does a vague or incomplete initial response satisfy the rule?+
No. A single-sentence letter asserting only that the defendant was out of town without naming witnesses or specifying locations fails to meet the specificity requirements. The rule demands concrete details so the government can investigate the claimed alibi.
Supporting sources
What constitutes good cause for a late or supplemental alibi disclosure?+
Good cause may exist when newly discovered evidence, such as previously unavailable timekeeping records, prevents earlier identification of witnesses. The court retains discretion to grant an exception, but mere inconvenience or lack of diligence does not qualify.
Supporting sources
Is evidence of a withdrawn alibi notice admissible against the defendant?+
No. Evidence of an intention to rely on an alibi defense that is later withdrawn, or any statement made in connection with that intention, is inadmissible in any civil or criminal proceeding against the person who gave the notice.
Supporting sources
alibi
rules); Taylor v. Illinois ,…
statute, of a kind enacted by at least 15 States dating from 1927); United States v. DiFrancesco , 449 U. S. 117, 142 (1980) (upholding against a double jeopardy challenge an Act of…
Criminal Law & ProcedureConstitutional protection of accused persons · Fair trial and guilty pleasUBEFoundational