State of Minnesota v. Trimell Cornell Chamberlain

This opinion is nonprecedential except as provided by
Minn. R. Civ. App. P. 136.01, subd. 1(c).

STATE OF MINNESOTA
IN COURT OF APPEALS
A25-1262

State of Minnesota,
Plaintiff,

vs.

Trimell Cornell Chamberlain,
Defendant.

Filed January 20, 2026
Appeal dismissed
Johnson, Judge

Ramsey County District Court
File No. 62-CR-24-4505

Keith Ellison, Attorney General, St. Paul, Minnesota; and

John Choi, Ramsey County Attorney, Anna R. Light, Assistant County Attorney, St. Paul,
Minnesota (for plaintiff)

Joshua Johnson, The Law Offices of Josh Johnson, Minneapolis, Minnesota (for defendant)

Considered and decided by Johnson, Presiding Judge; Ede, Judge; and Jesson,

Judge. ∗

Retired judge of the Minnesota Court of Appeals, serving by appointment pursuant
∗

to Minn. Const. art. VI, § 10.
 NONPRECEDENTIAL OPINION

JOHNSON, Judge

Trimell Cornell Chamberlain is charged with second-degree intentional murder.

The complaint alleges facts based in part on cell-site-location information (CSLI) that

police investigators obtained after executing a search warrant. Chamberlain moved to

suppress the CSLI evidence and to dismiss the complaint. The district court denied the

motion. The district court later certified two questions to this court pursuant to rule 28.03

of the rules of criminal procedure. We conclude that the certified questions are not

appropriate for resolution under rule 28.03 and, therefore, dismiss the appeal.

FACTS

In the early morning hours of April 3, 2024, R.B. was killed at the intersection of

Lafond Avenue and Grotto Street in St. Paul after being struck by a car that drove away

and then being shot multiple times by a person who fled on foot. The incident, the flight

of the car, and the flight of the shooter were recorded by multiple surveillance

videocameras. The investigating officers suspected that the driver of the car picked up the

shooter after the incident and that both the driver and the shooter used cellphones to

communicate with each other.

Three weeks after the incident, a police officer applied for and obtained a search

warrant that required certain cell-service providers (Verizon, AT&T, Sprint, and T-Mobile)

to disclose certain information in their electronic business records. Specifically, the search

warrant required the cell-service providers to produce data identifying the cellphones that

were in the vicinity of the incident or the vicinity of the flight paths at relevant times

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surrounding the incident, including information concerning the locations of the cellphones

and information concerning the times and durations of any communications between

cellphones. The search warrant specified search criteria and parameters, which allowed

the cell-service providers to extract the information sought using tower-dump searches and

area searches. 1 The investigating officers later independently obtained information relating

to Chamberlain’s cellphone. Using both the CSLI provided by the cell-service providers

and the information relating to Chamberlain’s cellphone, the investigating officers learned

that Chamberlain’s cellphone was near the scene of the crime when the incident occurred

and traveled along the car’s flight path immediately after the incident.

In July 2024, the state charged Chamberlain with second-degree intentional murder,

in violation of Minn. Stat. § 609.19, subd. 1(1) (2022). In January 2025, Chamberlain

moved to suppress the CSLI evidence and to dismiss the complaint. He argued that the

search warrant is invalid under both constitutional and statutory law. In June 2025, the

district court denied Chamberlain’s motion.

In July 2025, Chamberlain requested an order from the district court certifying

questions to this court pursuant to rule 28.03 of the rules of criminal procedure. The state

1
According to evidentiary materials in the district court record, a tower-dump search
seeks CSLI concerning cellphones that are connected to a specified cell tower and are
within a specified geographic area during a specified time period. A tower-dump search
reveals CSLI for cellphones only to the extent that they were actively used in some way,
such as by having initiated or received a call or a text message or having accessed the
internet. An area search, by contrast, is not focused on a particular cell tower. An area
search seeks CSLI concerning cellphones that were within a certain radius of a specified
geographic location during a specified time period. Unlike a tower-dump search, an area
search reveals CSLI for cellphones that were not actively used during the specified time
period.

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opposed the request. The district court granted Chamberlain’s request in part and certified

the following two questions:

1. Does the Fourth Amendment of the United States
Constitution and Article I Section 10 of the Minnesota State
Constitution prohibit the search or seizure by law enforcement
of individuals’ historical cell site information (CSLI) when
probable cause for the search is based solely on their physical
proximity to a crime or location of interest?

2. Must law enforcement meet requirements set
forth in Minn. Stat. § 626A.42 in order to obtain historical cell
site location information for multiple people based on their
physical proximity to a crime or location of interest?

Chamberlain filed an appellate brief urging this court to answer both questions in

the affirmative. The state filed an appellate brief urging this court to dismiss the appeal or,

in the alternative, to answer both questions in the negative.

DECISION

The applicable rule provides that, upon a motion to dismiss in a criminal case, a

district court may certify questions to this court if “any question of law arises that in the

district court’s opinion is so important or doubtful that the Court of Appeals should decide

it.” Minn. R. Crim. P. 28.03(2).

If a district court certifies questions to an appellate court, it is appropriate for the

appellate court to determine whether the certified questions should be answered. State v.

Filipovic, 251 N.W.2d 110, 112 (Minn. 1977). The certified-questions procedure “is a

proper means of presenting important or doubtful questions of law,” but the supreme court

“has imposed and enforced limitations on its use.” Id. One such limitation is that “[t]he

certification procedure should not be used to present a hypothetical question or to secure

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an advisory opinion.” Id. In addition, “An appellate court will not consider abstract or

unnecessarily general questions which might result in one answer to one set of

circumstances but another answer to a different set of circumstances.” Thompson v. State,

170 N.W.2d 101, 103 (Minn. 1969). The purpose of rule 28.03 “is to obtain an answer

from an appellate court on a question of law that is embedded within a matter pending in

the district court.” State v. Knoch, 781 N.W.2d 170, 176 (Minn. App. 2010), rev. denied

(Minn. June 29, 2010).

A.

The first certified question concerns the Fourth Amendment to the United States

Constitution and article I, section 10, of the Minnesota Constitution, which generally

prohibit unreasonable searches and seizures. Specifically, the first certified question asks

whether a warrant authorizing a search for CSLI is constitutionally valid if “probable cause

for the search is based solely on [the] physical proximity to a crime or location of interest”

of persons possessing cellphones whose information would be collected.

In State v. Contreras-Sanchez, 5 N.W.3d 151 (Minn. App. 2024), rev. granted

(Minn. May 29, 2024), this court considered whether geofence warrants, which authorize

searches for location information similar to CSLI, are “categorically impermissible as

general warrants under” the Fourth Amendment to the United States Constitution and

article I, section 10, of the Minnesota Constitution. Id. at 160. We concluded that they are

not categorically impermissible, that they “may be constitutional depending on the

circumstances,” and that they “must be assessed on a case-by-case basis.” Id. at 163-64.

We then considered whether the geofence warrant in that case satisfied constitutional

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requirements. Id. at 161, 164-71. We concluded that the geofence warrant in that case

“was supported by probable cause, was sufficiently particularized, and was not overbroad

to the extent it permitted law enforcement to seize anonymous location-history data.” Id.

at 171. After our opinion was issued, Contreras-Sanchez filed a petition for review, which

was granted by the supreme court, where the case now is pending. State v. Contreras-

Sanchez, A22-1579 (Minn. May 29, 2024) (order).

In this case, the district court cited and relied on Contreras-Sanchez in its order

ruling on Chamberlain’s motion to suppress. The district court stated that a warrant seeking

CSLI with tower-dump searches and area searches is very similar to a warrant seeking

location information with a geofence search. In his appellate brief, Chamberlain repeatedly

cites our Contreras-Sanchez opinion.

A certified question “should be carefully and precisely framed so as to present

distinctly and clearly the question of law involved.” Thompson, 170 N.W.2d at 103. As

stated above, the certified-questions procedure is not appropriate for “abstract or

unnecessarily general questions which might result in one answer to one set of

circumstances but another answer to a different set of circumstances.” Id. In addition, the

certified-questions procedure is not appropriate for “a mixed question of fact and law.”

State v. Moller, 149 N.W.2d 274, 276 (Minn. 1967).

The constitutionality of a warrant authorizing tower-dump searches and area

searches cannot be determined by answering a certified question of law because the

analysis necessarily requires the application of legal principles to the particular

circumstances of a particular case. See Contreras-Sanchez, 5 N.W.3d at 163-64. If we

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were to attempt to answer the first certified question, we inevitably would do so by applying

our opinion in Contreras-Sanchez to the particular circumstances of this case. In addition,

we believe that it is prudent to refrain from answering the first certified question while the

Contreras-Sanchez appeal is pending in the supreme court.

Thus, we decline to answer the first certified question.

B.

The second certified question concerns Minnesota Statutes section 626A.42. At the

heart of the statute is the following provision:

[A] government entity may not obtain the location information
of an electronic device or unique identifier without a tracking
warrant. A warrant granting access to location information
must be issued only if the government entity shows that there
is probable cause the person who possesses an electronic
device or is using a unique identifier is committing, has
committed, or is about to commit a crime.

Minn. Stat. § 626A.42, subd. 2(a) (2024).

The second certified question asks whether law-enforcement officers must comply

with section 626A.42 “to obtain historical cell site location information for multiple people

based on their physical proximity to a crime or location of interest.” We understand the

second certified question to seek clarification as to whether section 626A.42 may be

invoked to obtain a warrant for historical CSLI (which was contested by the parties in the

district court) in addition to contemporaneous CSLI (which was not contested). Both

parties have briefed that issue.

In their respective briefs, the parties have cited various statutory provisions in

support of their respective arguments concerning section 626A.42. Both parties naturally

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cite the central provision quoted above, subdivision 2(a). Chamberlain also cites the

definition of “location information” in subdivision 1(e) and the definition of “tracking

warrant” in subdivision 1(h). The state cites subdivision 3(c), which concerns 60-day

extensions of tracking warrants. Both parties cite Minnesota Statutes section 626.085,

which governs search warrants for electronic communication information. In addition,

Chamberlain cites the supreme court’s opinion in State v. Harvey, 932 N.W.2d 792 (Minn.

2019), in which the supreme court considered, among other things, whether police officers

violated section 626A.42 when they sought and obtained an order authorizing a search for

CSLI relating to the appellant’s cellphone. Id. at 806.

In the civil context, the supreme court has said that whether a certified question is

doubtful depends on whether “controlling precedent” exists. Jostens, Inc. v. Federated

Mut. Ins. Co., 612 N.W.2d 878, 885 (Minn. 2000) (applying Minn. R. Civ. App. P.

103.03(h)). In Jostens, the supreme court determined that the certified question was not

doubtful because the existing legal authorities provided “sufficient guidance.” Id. at 886.

The same is true in this case. The plain language of section 626A.42 and Harvey provide

sufficient guidance on the question whether section 626A.42 applies to warrants seeking

historical CSLI.

Thus, we decline to answer the second certified question.

In sum, neither certified question is appropriate for resolution under the procedure

authorized by rule 28.03. Therefore, we dismiss the appeal.

Appeal dismissed.

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