Accessories are those who, having knowledge of the commission of the crime, and without having participated therein, either as principals or accomplices, take part subsequent to its commission in any of the following manners:
1. By profiting themselves or assisting the offender to profit by the effects of the crime.
2. By concealing or destroying the body of the crime, or the effects or instruments thereof, in order to prevent its discovery.
3. By harboring, concealing, or assisting in the escape of the principals of the crime, provided the accessory acts with abuse of his public functions or whenever the author of the crime is guilty of treason, parricide, murder, or an attempt to take the life of the Chief Executive, or is known to be habitually guilty of some other crime.