alibi

An alibi (, 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.).