Alibi

An alibi (/ˈæləbaɪ/, from the Latin, alibī, meaning "somewhere else") is a statement by a person under suspicion in a crime that they were in a different place when the offence was committed. During a police investigation, all suspects are usually asked to provide details of their whereabouts during the relevant time period, which where possible would usually be confirmed by other persons or in other ways (such as by checking phone records, or credit card receipts, use of CCTV, etc.).

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^[1] states: "Alibi is different from all of the other defences; it is based upon the premise that the defendant is truly innocent."