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13. Inchoate offences

Attempt, conspiracy and incitement

Posted By lanbuk.com

In simple terms

Inchoate offences catch conduct before the full crime is done, so that criminal plans can be stopped early. In Sierra Leone they are mainly common law offences received from England.

Attempt

Actus reus: The act must be immediately, not remotely, connected with the offence, and must be one that cannot reasonably be regarded as having any other purpose (the proximity and equivocality tests).

Cope v Reginam: A diamond-area superintendent who regularly handled concentrates took a pan of them unescorted. The Court of Appeal applied R v Robinson and quashed his for attempted larceny, because his act was equally consistent with his ordinary duties.

Mens rea: Intention to commit the full offence.

Impossibility: Under the received common law, factual impossibility is generally no defence, but legal impossibility may be.

Conspiracy

Definition: An agreement between two or more persons to do an unlawful act, or a lawful act by unlawful means. The agreement is the offence.

Overt acts: In treason cases under the 1963 Act, conspiracy has been charged as an overt act of preparing, and overt acts are laid with particularity (Lansana; State v Forna).

Incitement

Definition: Encouraging or persuading another to commit an offence, with intention that it be committed.

Communication: The incitement must reach the person incited. In Mohamed Musa v Reginam a conviction for inciting others not to pay local tax was quashed because there was no evidence of a communication to anyone the accused wished to incite; a statement of one's own intention not to pay is not incitement.

No need for the offence: The full offence need not be committed (Bob-Jones).

Words and Latin in this note

Actus reus
The physical part of a crime: the act, the circumstances, and in a result crime the consequence. It does not include the state of mind. It must be voluntary, unless the offence is one of the rare status crimes. Open the note.
Mens rea
The mental element in the definition of a crime. It is not one standard. Intention is the highest form. Recklessness is below it. Gross negligence sits at the bottom. The definition of the particular crime decides which is required. Open the note.

Memory map

Inchoate offences

Attempt

  • Actus reus
  • Cope v Reginam
  • Mens rea
  • Impossibility

Conspiracy

  • Definition
  • Overt acts

Incitement

  • Definition
  • Communication
  • No need for the offence

Key points

  • An attempt needs an act immediately connected…
  • Conspiracy is the agreement itself
  • Incitement needs a communication reaching the…
  • The incited offence need not be committed

Cases

  • Cope v Reginam
  • Mohamed Musa v Reginam

Key terms

  • Actus reus
  • Conviction
  • Mens rea

Take-home points

  • An attempt needs an act immediately connected with the offence and unequivocal in purpose: Cope v Reginam.
  • Conspiracy is the agreement itself.
  • Incitement needs a communication reaching the incitee: Mohamed Musa v Reginam.
  • The incited offence need not be committed.

Cases in this topic

Related case law

Full judgments on Lanbuk on the same areas of law.

See also

  • Cope v Reginam · Lanbuk on the Law of Crimes in Sierra Leone · ALR (S.L.) 474 (1964-66), Court of Appeal of Sierra Leone
  • Mohamed Musa v Reginam · Lanbuk on the Law of Crimes in Sierra Leone · Court of Appeal of Sierra Leone, Ames Ag P

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'Inchoate offences, Lanbuk on the Law of Crimes in Sierra Leone' (Lanbuk) <https://www.lanbuk.com/llb/criminal-law-of-sierra-leone/inchoate-offences> accessed 31 October 2026

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