Security Offences (Special Measures) 9 State or any public officer appointed by a minister, the Menteri Besar or Chief Minister of a State; “Minister” means the Minister charged with the responsibility for home affairs; “protected witness” means a witness whose exposure will jeopardize the gathering of evidence or intelligence or jeopardize his life and well-being. PART II SPECIAL POWERS FOR SECURITY OFFENCES Power of arrest and detention 4. (1) A police officer may, without warrant, arrest and detain any person whom he has reason to believe to be involved in security offences. (2) A person arrested under subsection (1) shall be informed as soon as may be of the grounds of his arrest by the police officer making the arrest. (3) No person shall be arrested and detained under this section solely for his political belief or political activity. (4) The person arrested and detained under subsection (1) may be detained for a period of twenty-four hours for the purpose of investigation. (5) Notwithstanding subsection (4), a police officer of or above the rank of Superintendent of Police may extend the period of detention for a period of not more than twenty-eight days, for the purpose of investigation.