The opinion of the court was delivered by: Graffeo, J.:
This opinion is uncorrected and subject to revision before publication in the New York Reports.
In this appeal, we consider whether CPL 520.10 (2) (b) prohibits a court from designating only one form of bail.
Petitioner Shaun McManus was on parole in January 2009 when he was arrested for arson in the third degree and related offenses stemming from two separate incidents involving the same victim. McManus was alleged to have assaulted the individual and set two of his automobiles on fire. Bail was set at $5,000, cash or bond, which McManus posted. The victim was granted a temporary order of protection.
McManus subsequently violated the order of protection by verbally abusing the victim and twice threatening him with weapons (a screwdriver and what appeared to be a handgun). At his arraignment on the new charges, bail was set at $1,500 for each incident, cash or bond. Because the Division of Parole filed a violation warrant with the Department of Corrections, McManus was not released on bail after arraignment.
Based on the first two incidents between McManus and the victim, McManus was indicted for two counts of arson in the third degree, four counts of aggravated harassment in the second degree, two counts of criminal mischief in the fourth degree and one count of assault in the third degree. Supreme Court ordered that bail be set at $20,000, "cash only." A few days later, the People moved to increase the amount of cash bail to $50,000 but the court denied the application.
When the Division of Parole lifted its hold on McManus, he tried to secure a bail bond but was unable to do so because the court had designated bail as cash only. This prompted McManus to seek alteration of the bail ruling, arguing that setting one form of bail -- such as cash-only bail -- is prohibited under CPL 520.10 (2) (b), which he claimed requires a court to set a second permissible form of bail. Supreme Court disagreed and adhered to the $20,000 cash bail order.
McManus then commenced this CPLR article 70 proceeding for a writ of habeas corpus.*fn1 A different Justice dismissed the petition, concluding that CPL 520.10 (2) does not preclude a judge from setting a single form of bail (26 Misc 3d 317 [Sup Ct, Bronx County, 2009]). The Appellate Division affirmed for the same reason (77 AD3d 571 [1st Dept 2010]). We granted leave to appeal (16 NY3d 768 ) and now reverse.
As an initial matter, it is necessary to address whether this appeal became moot after McManus entered a guilty plea to arson in the fourth degree and other offenses. As a result of the plea, the legality of his pretrial detention is technically no longer germane since that custody was terminated (see e.g. People ex rel. Chakwin v Warden, N.Y. City Correctional Facility, Rikers Is., 63 NY2d 120, 125 ). Nevertheless, the mootness exception applies under these circumstances because the propriety of cash-only bail is an important issue that is likely to recur and which typically will evade our review (see e.g. City of New York v Maul, 14 NY3d 499, 507 ; Matter of Hearst Corp. v Clyne, 50 NY2d 707, 714-715 ). We therefore decline to dismiss this appeal.*fn2
Section 520.10 of the Criminal Procedure Law delineates the authorized forms of bail and the methods by which bail may be set by a court. Nine categories of bail are permitted under subdivision (1) of the statute: (1) cash; (2) an insurance company bail bond; (3) a secured surety bond; (4) a secured appearance bond; (5) a partially-secured surety bond; (6) a partially-secured appearance bond; (7) an unsecured surety bond; (8) an unsecured appearance bond; and (9) by posting bail with a credit card or similar device (see CPL 520.10  [a] - [i]).
Subdivision (2) of the statute specifies two distinct "methods of fixing bail." The first option permits a court to "designate the amount of the bail without designating the form or forms in which it may be posted" -- in such instance, the court merely declares a monetary sum. If this occurs, the accused can post either an unsecured surety bond or an unsecured appearance bond (see CPL 520.10  [a]). The second option states that a "court may direct that the bail be posted in any one of two or more of the forms specified in subdivision one, designated in the alternative, and may designate different amounts varying with the forms" (CPL 520.10  [b]).
McManus asserts that cash-only bail is illegal under CPL 520.10 (2) (b) because that statutory provision does not authorize a court to fix a single form of designated bail; he maintains that the subdivision instead requires that at least two forms of bail be ordered. In support of this claim, McManus relies on the language in subdivision (2) (b) referring to "any one of two or more of the forms" of bail enumerated in subdivision (1). The District Attorney contests that interpretation and asserts that a single form of bail is permissible because subdivision (2) (a) references a singular "form" of bail and the word "may" rather than "must" appears in paragraphs (a) and (b) of subdivision (2).
As the District Attorney observes, the reference to a single "form" of bail arguably suggests that the Legislature intended a court to have discretion to impose only one type of bail. Moreover, the use of the word "may" in conjunction with the reference to two or more bail alternatives could be interpreted to mean that other unspecified options -- including a single form of bail -- are not outlawed by CPL 520.10.
Both parties' contentions have some degree of linguistic merit. However, in our view, defendant's proposed construction is the better reading of the statute as it comports with the overall statutory structure and the legislative purpose that prompted the enactment of section 520.10 in the Criminal Procedure Law. Inclusion of the word "may" in both subdivisions was the simplest way for the Legislature to codify the two permissible methods for fixing bail: under subdivision (2) (a), a court may order a specific amount of bail without stating any particular bail form (in which case the accused may choose either an unsecured surety bond or an unsecured appearance bond); or, under subdivision (2) (b), a court may specify the forms of bail but the defendant is entitled to at least two alternative choices. The Legislature could not have used the word "must" in either provision because that would have defeated the court's discretion to choose between the two options for fixing bail.
Providing flexible bail alternatives to pretrial detainees -- who are presumptively innocent until proven guilty beyond a reasonable doubt -- is consistent with the underlying purpose of article 520. The legislation was intended to reform the restrictive bail scheme that existed in the former Code of Criminal Procedure in order to improve the availability of pretrial release (see e.g. Bellamy v Judges in N.Y. City Crim. Ct., 41 AD2d 196, 202 [1st Dept 1973], affd 32 NY2d 886 ; Mem of Commission on Revision of the Penal Law and Criminal Code, Bill Jacket, L 1970, ch 996, at 10). ...