[24A Arrest without warrant: other persons]
[24A Arrest without warrant: other persons]

[(1)     A person other than a constable may arrest without a warrant—

(a)     anyone who is in the act of committing an indictable offence;

(b)     anyone whom he has reasonable grounds for suspecting to be committing an indictable offence.

(2)     Where an indictable offence has been committed, a person other than a constable may arrest without a warrant—

(a)     anyone who is guilty of the offence;

(b)     anyone whom he has reasonable grounds for suspecting to be guilty of it.

(3)     But the power of summary arrest conferred by subsection (1) or (2) is exercisable only if—

(a)     the person making the arrest has reasonable grounds for believing that for any of the reasons mentioned in subsection (4) it is necessary to arrest the person in question; and