CHAPTER IV—PARTIES TO AND PERSONS INCITING TO COMMIT OFFENCES.
20. Joint offenders in prosecution of common purpose.
When two or more persons form a common intention to prosecute an unlawful purpose in conjunction with one another, and in the prosecution of that purpose an offence is committed of such a nature that its commission was a probable consequence of the prosecution of that purpose, each of them is deemed to have committed the offence.
Common purpose
Conspiracy
Contribution
Joint commission
EDIT.