Vacated and remanded by published opinion. Judge DAVIS wrote the opinion, in which Judge KING and Judge KEENAN joined.
OPINION
Robert Steven Donnell pled guilty to being a felon in possession of a firearm in violation of 18 U.S.C. § 922(g)(1). The district court sentenced him to 78 months’ imprisonment, based in part on its finding that Donnell had committed the offense subsequent to sustaining at least two felony convictions for a “crime of violence.” See U.S. Sentencing Guidelines (“U.S.S.G.”) § 2K2.1(a)(2) (2008). Donnell timely appealed. This court has jurisdiction pursuant to 18 U.S.C. § 3742(a) and 28 U.S.C. § 1291.
On appeal, Donnell argues that the district court erred in relying on his Maryland second degree assault conviction to enhance his offense level. The district court found that Donnell’s prior conviction was a crime of violence by relying on facts in an unincorporated “statement of probable cause” that was introduced at sentencing by the Government. The record reveals that the state court charging document, the “statement of charges,” contained no details establishing that the second degree assault conviction involved violence. Rather, the facts establishing that the assault was violent were contained only in the unincorporated statement of probable cause prepared by the arresting officer.
For the reasons explained within, we hold that the district court was not permitted under Supreme Court precedent and our own precedents to consider the unincorporated statement of probable cause. Accordingly, we vacate Donnell’s sentence and remand for resentencing.
I.
Donnell pled guilty to being a felon in possession of a firearm in violation of 18 U.S.C. § 922(g)(1). The only disputed issue at sentencing was whether Donnell had one or two prior convictions for a crime of violence under U.S.S.G. § 2K2.1, which the parties agreed governed Donnell’s conduct. The Government argued that Donnell committed the instant offense subsequent to sustaining at least two felony convictions for a crime of violence, while Donnell argued that he only had one conviction for a crime of violence. The parties disputed whether a conviction for second degree assault, to which Donnell pled guilty in the District Court of Maryland for Howard County, constituted a predicate conviction for a crime of violence.
*892 The Government supported its contention that the Maryland second degree assault conviction was a crime of violence by introducing the statement of charges and the statement of probable cause. The Government did not produce the plea transcript or a written plea agreement for the second degree assault conviction. The statement of charges alleged that on or about May 25, 2003, Donnell “did assault [his spouse] in the second degree in violation of [Md.Code Ann., Crim. Law] 3-203, contrary to the form of the act of the assembly in such case made and provided and against the peace, government, and dignity of the state.” J.A. 78. The statement of probable cause provided a detailed description of the underlying facts, from which the district court concluded that the prior second degree assault conviction was a crime of violence. 1 The separately paginated documents were dated the same day and filed in the same court. On the statement of charges, the judicial officer had checked off “yes” (rather than “no”) next to “probable cause,” indicating that there was probable cause. J.A. 78.
After hearing argument, the district court found it proper to consult the statement of probable cause to determine whether the second degree assault was a qualifying crime of violence and, consequently, it assigned a Guidelines base offense level of 24, for possession of a firearm after two felony convictions. After a two level increase for obstruction of justice for fleeing from an officer and a three level decrease for acceptance of responsibility, the district court concluded that Donnell’s final offense level was 23. With a criminal history category of IV, Donnell’s advisory Guidelines range was 70 to 87 months. After carefully considering the 18 U.S.C. § 3553(a) sentencing factors, the court sentenced Donnell to 78 months’ imprisonment. Pursuant to the plea agreement, Donnell preserved his right to appeal this issue.
II.
The issue presented on appeal is whether the district court erred in considering information in an unincorporated statement of probable cause to conclude that Donnell’s Maryland second degree assault conviction was a crime of violence. This court reviews de novo whether a prior conviction qualifies as a crime of violence for purposes of a sentencing enhancement.
United States v. Williams,
Sentencing for a felon in possession charge is governed by U.S.S.G. § 2K2.1, which sets a base offense level of 24 “if the defendant committed any part of the instant offense subsequent to sustaining at least two felony convictions of ... a crime of violence,” § 2K2.1(a)(2), and a base level of 20 if “the defendant committed any part of the instant offense subsequent to sustaining one felony conviction of ... a crime of violence,” § 2K2.1(a)(4)(A). A crime of violence for purposes of § 2K2.1 is defined to include
[A]ny offense under federal or state law, punishable by imprisonment for a term exceeding one year, that (1) has as an element the use, attempted use, or threatened use of physical force against the person of another, or (2) is burglary of a dwelling, arson, or extortion, involves use of explosives, or otherwise involves conduct that presents a serious *893 potential risk of physical injury to another.
U.S.S.G. § 4B1.2(a); see
id.
§ 2K2.1 cmt. n. 1 (explaining that “crime of violence” is defined in § 4B1.2(a)).
2
A sentencing court must normally use a categorical approach to determine whether an earlier conviction qualifies as a crime of violence, relying only on the fact of conviction and the elements of the offense.
James v. United States,
In a limited class of cases where the definition of the prior offense includes violent and nonviolent conduct, a sentencing court may use a modified categorical approach to look beyond the fact of conviction and elements of the offense to determine which category of behavior underlies the prior conviction.
See Johnson v. United States,
— U.S. —,
We have recognized that, because second degree assault under Maryland law “encompasses several distinct crimes, some of which qualify as violent felonies and others of which do not,” sentencing courts are entitled to use the modified categorical approach to determine whether a prior conviction for Maryland second degree assault is a crime of violence.
Alston,
Here, to prove that the category of conduct underlying Donnell’s second degree *894 assault conviction involved the “use of force” and thus was a crime of violence, the Government introduced two documents: (1) the statement of charges, a barebones document laying out the charge and containing a judicial officer’s check mark indicating that there was probable cause; and (2) the separately paginated statement of probable cause, which includes the sworn statement of the arresting officer containing details of the assault. The district court relied on the facts in the statement of probable cause to determine that Donnell’s prior conviction was a crime of violence. In so doing, the district court erred. To appropriately consider information in an external document, such as the statement of probable cause at issue here, the document containing the information must be expressly incorporated into the charging document.
Shepard
and
United States v. Simms,
We are persuaded that reliance on an unincorporated statement of probable cause, as the district court did here, presents the same problem as reliance on the complaint applications and police reports in
Shepard.
The certainty that the defendant necessarily admitted the facts contained in the external document, as distinguished from the charging document itself, the transcript of the plea colloquy, or the written plea agreement, is absent.
See Shepard,
In the aftermath of
Shepard,
we confirmed the importance of an express incorporation of information contained in documents outside the charging document in
Simms.
In
Simms
we affirmed a district court’s use of a Maryland application for a statement of charges to determine that a battery conviction was a violent felony because the application was expressly incorporated into the charging document.
Contrary to the Government’s contentions, neither of the two
pre-Shepard,
preSimms cases on which it relies,
Kirksey
and
Coleman,
compels a different result; in each of those cases the external document was expressly incorporated into the charging document.
4
In
United States v. Kirksey,
Likewise, in
United States v. Coleman,
Here, it is uncontested that the district court relied upon an officer’s sworn statements contained in a statement of probable cause that was not expressly incorporated into the statement of charges to determine that Donnell’s Maryland second degree assault conviction constituted a predicate offense under U.S.S.G. § 2K2.1(a)(2). The *897 district court therefore erred in relying on facts contained in the unincorporated affidavit to find that Donnell had two qualifying convictions.
III.
For the reasons set forth, we vacate the judgment and remand for resentencing proceedings consistent with this opinion. 6
VACATED AND REMANDED.
Notes
. The statement of probable cause included facts showing that Donnell "dragged [the victim] out of the car and kicked her in the head”; a dispatcher heard the victim being hit while talking on the phone and Donnell threaten to kill her; and Donnell punched and hit the victim. J.A. 79-80.
. The parties agree that only the "use of force” prong of § 4B 1.2(a) is at issue in this case.
. This court has relied upon cases that construe "violent felony” under the Armed Career Criminal Act
("ACCA")
when considering "crimes of violence” under the Guidelines because the language in the Guidelines is essentially identical to the language in the ACCA.
United States v. Knight,
. Our early cases perhaps suggest that an affidavit for probable cause is incorporated as a matter of Maryland law, even without incorporation by language or any other means. Whether the Maryland Rules alone — without express incorporation — incorporate the affidavit of probable cause into the statement of charges for the purpose of determining whether a prior conviction is a crime of violence is, at best, ambiguous. Maryland Rule of Criminal Procedure Rule 4-102(a) defines “charging document” as "a written accusation alleging that a defendant has committed an offense” and specifically includes a "statement of charges” as a charging document. The rules provide that the charging document must contain the name of the defendant, "a concise and definite statement of the essential facts of the offense with which the defendant is charged and, with reasonable particularity, the time and place the offense occurred.” Md. R. 4-202(a). This might suggest that the affidavit containing details of the crime is part of the charging document. But, in the case of second degree assault, it appears that the facts in the affidavit are not necessary to provide constitutionally sufficient notice. See Md.Code Ann., Crim. Law § 3-206(a) (Lexis 2011) ("A[] ... charging document ... [under the second degree assault provision] is sufficient if it substantially states: '(name of defendant) on (date) in (county) assaulted (name of victim) in the ... degree or (describe other violation) in violation of (section violated) against the peace, government, and dignity of the State.’ ”).
The Maryland Rules also provide that an offense may be tried on a statement of charges filed before arrest with an affidavit of probable cause or after arrest with an arresting officer’s statement of probable cause. Md. R. 4-201(b), -211(b). But, these rules do not answer the paramount inquiry under
Shepard,
namely, whether the defendant necessarily admits to those facts when entering his plea.
Cf. United States v. Hagenow,
. The Government's argument that the Kirksey panel's reliance on a third unincorporated application means that express incorporation is not required is unpersuasive. A third application for a statement of charges/statement of probable cause was considered by the district court in Kirlcsey, but on appeal, we explained that the statement of charges for the third conviction was superseded by the criminal information filed by the state's attorney in the Circuit Court for Baltimore City, on which the defendant was ultimately tried and convicted. Id. at 122-23. We specifically concluded that in “at least two of the charging documents” involved in the defendant's prior convictions, the language in the statement of charges incorporated the facts into the "charging document.” Id. at 126 (emphasis added). As Donnell points out, Kirlcsey's holding was not dependent upon the third unincorporated application. See id.
. Although we express no view as to what sentence the district court might properly impose upon remand, we find wholly unpersuasive, particularly in light of the district court’s careful analysis of the § 3553(a) factors, the Government’s fail-back argument that we should affirm the judgment on the theory that the district court would have imposed the same sentence without the enhancement that we find was improperly applied.
