A custodial death refers to a death that occurs while a person is in police custody or prison. Common causes of custodial deaths include traumatic asphyxia during arrests due to police restraint holds, blunt injuries from assaults, alcohol withdrawal, and suicides in prison cells. Investigations into custodial deaths aim to determine the cause of death and ensure authorities are not responsible for any ill-treatment, though authorities may delay examinations to allow injuries to heal or dispose of the body.