REPUBLIC v. ABROKWAH Criminal law and procedure—Nolle prosequi—Notice of entry by a state attorney—Assumption that official duty regularly performed—Discharge of accused—Court purporting to rescind its own decision—Appeal by the Republic—Non-production of written authorisation from Attorney-General not reason for rescission of trial court's decision—Whether written authority of Attorney-General presumed to have been regularly performed—Whether power of Attorney-General to enter nolle prosequi subject to judicial inquiry—Criminal Procedure Code, 1960 (Act 30), s. 54—Evidence Decree, 1975 (N.R.C.D. 323), s. 37 (1).