Any person aware of a dead body lying in the district of a coroner has a duty to report it to the coroner; failure to do so is an offence. This can include bodies brought into England or Wales. The coroner has a team of Coroner's Officers (previously often ex-police officers, but increasingly from a nursing or other paramedical background) who carry out the investigation on the coroner's behalf. On the basis of the investigation, the coroner decides whether an inquest is appropriate. When a person dies in the custody of the legal authorities (in police cells, or in prison), an inquest must be held. In England, inquests are usually heard without a jury (unless the coroner wants one). However, a case in which a person has died under the control of central authority must have a jury, as a check on the possible abuse of governmental power.