necessary in the circumstances, including lethal weapons: to arrest a person subject to a detention order; to arrest a person in respect of whom the officer has reason to believe that there are grounds justifying their preventive detention, or that they have acted or are about to act or are likely to act in a manner prejudicial to national security; to arrest a person suspected of having committed an offence under the ISA, the Corrosive and Explosive Substances and Offensive Weapons Act, or sections 435 or 436 of the Penal Code which criminalize the commission of mischief by fire or an explosive substance to damage property or destroy a building; to overcome forcible resistance by a person to such an arrest; or to prevent an arrested person from escaping or being rescued from arrest. A person who has been arrested for any of the offences mentioned above must, as soon as possible after arrest, be "clearly warned of his liability to be shot at if he endeavours to escape from custody". In addition to a police officer, the power to use force can be exercised by a member of the security forces, any guard or watchman in a protected place, and any person authorized by the Commissioner of Police. Provisions exist in the ISA to make it easier to admit statements made by people charged with offences under the Act or certain offences under other laws specified in the Second Schedule to the Act. A statement is admissible in evidence in a trial and, if the person who made the statement chooses to testify during a trial, it may be used in cross-examination and to impeach their credit, "whether the statement amounts to a confession or not or is oral or in writing, made at any time, whether before or after that person is charged and whether in the course of a police investigation or not and whether or not wholly or partly in answer to questions, by that person to or in the hearing of any police officer of or above the rank of sergeant and whether or not interpreted to him by any other police officer or any other person concerned, or not, in the arrest". This is subject to two limitations: A statement is not admissible "if the making of the statement appears to the court to have been caused by any inducement, threat or promise having