Penal Code Section 461
Dishonestly breaking open any closed receptacle containing or supposed to contain property
461. Whoever dishonestly, or with intent to commit mischief, breaks open or unfastens any closed receptacle which contains or which he believes to contain property, shall be punished with imprisonment for a term which may extend to two years or with fine or with both.
Please refer to the Attorney General's Chamber of Malaysia's website for the latest law.