Article 20 of the Revised Penal Code (RPC) enumerates the accessories who are exempt from criminal liability, particularly those who are such with respect to their spouses, ascendants, descendants, legitimate, natural, and adopted brothers and sisters, or relatives by affinity within the same degrees, with the single exception of accessories falling within the provisions of paragraph 1 of the next preceding article.
However the aforesaid accessories who are exempted under Article 20 can still be held liable as principals for obstruction of justice under Presidential Decree (PD) No. 1829 or “Penalizing Obstruction Of Apprehension And Prosecution Of Criminal Offenders”.
Section 1 of the PD No. 1829 provides for the acts that may be considered as obstruction of justice.