Delaware Code
Chapter 2. GENERAL PROVISIONS CONCERNING OFFENSES
§ 209. Former prosecution in another jurisdiction; when a bar.

When conduct constitutes an offense within the concurrent jurisdiction of this State and of the United States or another state, a prosecution in any such other jurisdiction is a bar to a subsequent prosecution in this State under the following circumstances:

(1) The first prosecution resulted in an acquittal which has not subsequently been set aside or in a conviction as defined in § 207 of this title and the subsequent prosecution is based on the same conduct, unless:

a. The offense for which the defendant is subsequently prosecuted requires proof of a fact not required by the former offense and the law defining each of the offenses is intended to prevent a substantially different harm or evil; or
b. The second offense was not consummated when the former trial began; or
(2) The former prosecution was terminated, after the information was filed or the indictment found, by an acquittal or by a final order or judgment for the defendant which has not been set aside, reversed or vacated and which acquittal, final order or judgment necessarily required a determination inconsistent with a fact which must be established for conviction of the offense for which the defendant is subsequently prosecuted; or
(3) The former prosecution was improperly terminated as improper termination is defined in § 207(4) of this title and the subsequent prosecution is for an offense of which the defendant could have been convicted had the former prosecution not been improperly terminated.

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