Chapter V Some Principles of Criminal Liability
Section 8. Individual Criminal Responsibilities. - (a) In addition to existing provisions in Philippine law on principles of criminal responsibility, a person shall be criminally liable as principal for a crime defined and penalized in this Act if he/she:
(3) In any other way contributes to the commission or attempted commission of such a crime by a group of person acting with a common purpose. Such contribution shall be intentional and shall either:
(i) be made with the aim of furthering the criminal activity or criminal purpose of the group, where such activity or purpose involves the commission of a crime defined in this Act; or
(ii) be made in the knowledge of the intention of the group to commit the crime.
Individual criminal responsibility
Common purpose
EDIT.