Penal Code Section 121A
Offences against the person of the Yang di-Pertuan Agong, Ruler or Yang di-Pertua Negeri
121A. Whoever compasses, imagines, invents, devises or intends the death of or hurt to or imprisonment or restraint of the Yang di-Pertuan Agong or any of the Rulers or Yang di-Pertua Negeri, their heirs or successors, shall be punished with death and shall also be liable to fine.
Please refer to the Attorney General's Chamber of Malaysia's website for the latest law.