Jurisdiction — Territorial — Concurrent jurisdiction pursuant to treaty — Criminal offences — Convention between the Federal Republic of Germany and the Netherlands concerning the Merger of Customs Clearance Posts, 1958 — Arrest of Dutch national within area of joint customs clearance post — Whether arrested on Dutch or German territory — Absence of authority of German customs officials to arrest Dutch national on Dutch territory — Arrest in violation of customary international law and treaty provisions — Whether a bar to proceedings before municipal courts — Basic Law (GG) of the Federal Republic of Germany, Article 25

Relationship of international law and municipal law — Position of individuals in international law — Unlawful arrest in foreign country in violation of customary international law — Whether conferring right of action upon private individual — Right of injured State to obtain repatriation — Whether individual can enforce right of repatriation through proceedings in municipal courts of arresting State

Relationship of international law and municipal law — Treaties — Effect in municipal law — European Convention on Extradition, 1957 — European Convention on Human Rights, 1950, Article 5(1)(c) — Whether conferring right of action upon private individual — Whether violation of international convention constitutes bar to criminal proceedings under municipal law

Treaties — Effect in municipal law — Whether conferring rights upon individuals — Unlawful arrest — Whether violation of treaty provisions constitutes bar to criminal proceedings in municipal courts — European Convention on Extradition, 1957 — European Convention on Human Rights, 1950, Article 5(1)(c)

Human rights — Liberty, right to — European Convention on Human Rights, 1950, Article 5(1)(c) — Unlawful arrest — Whether automatically violates personal right of accused under Convention — Whether constitutes a bar to municipal criminal proceedings — The law of the Federal Republic of Germany