​There is no express legal requirement that a person suspected of having committed an offence must be interviewed under caution before any decision as to whether to prosecute is taken.
Nid oes gofyniad cyfreithiol penodol bod yn rhaid i berson yr amheuir ei fod wedi cyflawni trosedd gael cyfweliad dan rybudd cyn gwneud unrhyw benderfyniad ynghylch p'un ai ei erlyn ai peidio.