Part I.
commit any such offence; and in this Act, including any amendment made by this Act in any other enactment, “arrestable offence” means any such offence or attempt.
(2) Any person may arrest without warrant anyone who is, or whom he, with reasonable cause, suspects to be, in the act of committing an arrestable offence.
(3) Where an arrestable offence has been committed, any person may arrest without warrant anyone who is, or whom he, with reasonable cause, suspects to be, guilty of the offence.
(4) Where a constable, with reasonable cause, suspects that an arrestable offence has been committed, he may arrest without warrant anyone whom he, with reasonable cause, suspects to be guilty of the offence.
(5) A constable may arrest without warrant any person who is, or whom he, with reasonable cause, suspects to be, about to commit an arrestable offence.
(6) For the purpose of arresting a person under any power conferred by this section a constable may enter (if need be, by force) and search any place where that person is or where the constable, with reasonable cause, suspects him to be.
(7) This section shall not affect the operation of any enactment restricting the institution of proceedings for an offence, nor prejudice any power of arrest conferred by law apart from this section.
Use of force in making arrest, etc. 3.—(1) A person may use such force as is reasonable in the circumstances in the prevention of crime, or in effecting or assisting in the lawful arrest of offenders or suspected offenders or of persons unlawfully at large.
(2) Subsection (1) above shall replace the rules of the common law on the question when force used for a purpose mentioned in the subsection is justified by that purpose.
Penalties for assisting offenders. 4.—(1) Where a person has committed an arrestable offence, any other person who, knowing or believing him to be guilty of the offence or of some other arrestable offence, does without lawful authority or reasonable excuse any act with intent to impede his apprehension or prosecution shall be guilty of an offence.
(2) If on the trial of an indictment for an arrestable offence the jury are satisfied that the offence charged (or some other offence of which the accused might on that charge be found guilty) was committed, but find the accused not guilty of it, they may find him guilty of any offence under subsection (1) above of which they are satisfied that he is guilty in relation to the offence charged (or that other offence).
