Motions to Suppress Evidence in Michigan Domestic Violence Cases

A motion to suppress asks the judge to rule, before trial, that a piece of evidence cannot be used because of how it was obtained. This page covers two kinds of evidence: the defendant's own statements to police and evidence found after officers entered a home.^[8][9] A successful motion removes that evidence from the trial. It does not dismiss the charge, and the case can go forward on whatever evidence remains.

This page covers the grounds that come up most in domestic cases, the hearing, the timing, and the limits. Challenges to the complaining witness's statements are a different subject, governed by the hearsay rules and the Confrontation Clause; see Hearsay and the Confrontation Clause.

What can be challenged

Evidence	Ground	Core question
Statement by the defendant	Miranda	Was the defendant in custody and being interrogated without the warnings?[2]
Statement by the defendant	Voluntariness	Was the statement the product of a free and deliberate choice rather than intimidation, coercion or deception?[5]
Items seized or things officers saw in a home	Fourth Amendment and Const 1963, art 1, § 11	Was there a warrant or a recognized exception, such as emergency aid or consent?[9][6]
Evidence or statements following an arrest	Unlawful detention	Was there a warrant or probable cause to arrest?[10]

Statements: Miranda

Before custodial questioning, a suspect must be warned that he or she has the right to remain silent, that anything said can be used against him or her in court, that he or she has the right to the presence of an attorney, and that an attorney will be appointed if he or she cannot afford one.^[11] Unless a person in custody received those warnings and waived the rights, evidence obtained as a result of the interrogation cannot be used against him or her.^[8]

The rule has two triggers, and either can be absent at a domestic call.

• Custody. Whether a person was in custody is a two-part inquiry: whether a reasonable person would have felt he or she was not at liberty to end the questioning and leave, and whether the environment presented the same inherently coercive pressures as station-house questioning.^[12] Miranda itself says that general on-the-scene questioning about the facts surrounding a crime is not affected by its holding.^[3]
• Interrogation. The safeguards apply to express questioning and to its functional equivalent.^[13]

So an officer who walks into a living room and asks "what happened here?" may be doing the general on-the-scene questioning that Miranda leaves alone.^[3] Questions asked after a person has been handcuffed and placed in a patrol car raise the custody question.^[12] Each case turns on its own facts. See Should you talk to police?

Two limits are worth knowing. The Miranda rule bars only testimonial evidence; physical evidence obtained as a direct result of unwarned but voluntary statements is not covered by the exclusionary rule.^[14] And silence is treated in its own way: a prosecutor may not refer to a defendant's silence after arrest and after Miranda warnings.^[15]

Statements: voluntariness and the Walker hearing

Voluntariness is a separate question from Miranda. For a statement to be voluntary, the totality of the circumstances must show that it was "the product of a free and deliberate choice rather than intimidation, coercion, or deception."^[5] When voluntariness is challenged, the burden is on the prosecution to demonstrate voluntariness by a preponderance of the evidence.^[5]

In People v Cipriano, the Michigan Supreme Court identified factors relevant to that question.^[16]

• The age of the accused, and his or her lack of education or intelligence level.^[16]
• The extent of the accused's previous experience with the police.^[16]
• The repeated or prolonged nature of the questioning, and the length of detention before the statement.^[16]
• Lack of any advice about constitutional rights, and any unnecessary delay in bringing the accused before a magistrate.^[16]
• Whether the accused was injured, intoxicated, drugged or ill.^[16]
• Whether the accused was deprived of food, sleep or medical attention, was physically abused, or was threatened with abuse.^[16]

The hearing on such a motion is usually called a Walker hearing. When a defendant challenges whether a statement to police was voluntary and admissible, the trial court must hold a hearing outside the presence of the jury.^[4] Three features make it different from a trial.^[4]

1. The jury does not hear it.^[4]
2. The rules of evidence do not apply, except those on privileges.^[4]
3. A defendant who testifies at the hearing does not become subject to cross-examination on other issues in the case.^[4]

Entry into the home and searches

The Fourth Amendment and the Michigan Constitution protect against unreasonable searches and seizures. Ordinarily, a search or seizure conducted without a warrant is unreasonable per se, and evidence seized in violation of the constitutional prohibition must be excluded from trial; but several exceptions exist.^[9] Two exceptions that arise on domestic calls are covered here.

Emergency aid

Officers may enter a home without a warrant if they have an objectively reasonable basis for believing that someone inside needs emergency assistance.^[6] In 2026 the United States Supreme Court confirmed in Case v Montana that the standard does not require probable cause, and that an emergency-aid entry provides no basis to search the premises beyond what is reasonably needed to deal with the emergency while maintaining the officers' safety.^[17][18] A suppression motion in this setting can turn on two things: what the officers knew when they went in, and whether what they did inside went beyond the emergency.

Consent by someone who lives there

Under Georgia v Randolph, a warrantless search of a shared dwelling based on one occupant's consent is unreasonable and invalid as to a second occupant who is present and expressly refuses.^[19] That rule has limits that matter in domestic cases.

• Randolph itself says no question could reasonably be raised about police authority to enter a dwelling to protect a resident from domestic violence, so long as they have good reason to believe such a threat exists.^[20]
• An occupant who is absent because of a lawful detention or arrest is treated like any other absent occupant, so the remaining occupant can consent.^[21]
• In City of Westland v Kodlowski, the Court of Appeals held that a resident's decision to revoke consent did not make the officers' presence unlawful, because they were there in response to a domestic dispute and not to search for evidence.^[22] That decision was later vacated in part and reversed in part on other grounds.^[23]

What the exclusionary rule covers

When a search was unconstitutional, the exclusionary rule generally bars materials seized and observations made during it, and also the products or indirect results of the illegal search, known as "fruit of the poisonous tree."^[7] The rule is not automatic. Its purpose is to deter police misconduct, and the Michigan Supreme Court has said it does not automatically apply once a court finds a Fourth Amendment violation.^[7] More detail is in Police entering a home on a domestic call.

Challenging the arrest itself

There must be a warrant or probable cause to arrest. If there is not, the detention is illegal, and evidence obtained as a result of it, or a statement made during it, must be suppressed.^[10] In deciding whether an illegal arrest caused a statement, a court considers the time between the arrest and the statement, whether the official misconduct was flagrant, any intervening circumstances, and events before the arrest.^[10]

In a domestic case this ground has a statutory limit. Michigan law allows an officer to arrest for domestic assault without a warrant, even if the officer did not see the assault, when there is reasonable cause to believe the violation occurred and that the person has one of the listed relationships with the other person.^[24] See What happens when police respond to a domestic call.

How and when the motion is made

1. Get the discovery. On request, the prosecutor must provide police reports and interrogation records, any written or recorded statements by the defendant, and any affidavit, warrant and return pertaining to a search or seizure.^[25] These rules apply in misdemeanor cases too.^[26] See Discovery in Michigan domestic violence cases.
2. File before trial. A motion to suppress generally must be made in advance of trial. A court may allow one during trial in its discretion, but need not permit an untimely motion when the facts were known to the defendant beforehand.^[1] In a misdemeanor case the district court may require pretrial motions to be filed and argued no later than the pretrial conference.^[27]
3. Support it with facts. A defendant is generally entitled to an evidentiary hearing when admissibility is challenged on constitutional grounds, but no hearing is required where the challenge is plainly insufficient or is not backed by factual support.^[28]
4. The hearing. Witnesses may testify. If the parties agree, the motion may instead be decided on the record of the preliminary examination.^[28]
5. The ruling. The judge decides what is excluded. On appeal, the judge's factual findings are reviewed for clear error and the ultimate ruling is reviewed de novo, meaning without deference.^[29]

Scheduling differs from court to court. The court rule makes a pretrial conference something the district court may direct, not something it has to hold, so when a motion is heard depends on the court's own scheduling.^[27] See The pretrial conference and, for felony cases, The preliminary examination.

What suppression does and does not do

A ruling suppressing a statement or an item means the jury will not hear or see it as proof of guilt. The effect on the case depends on what else the prosecution has. In domestic violence prosecutions that can include the complaining witness's testimony, statements to police admitted under MCL 768.27c, 911 recordings, photographs and medical records, none of which depends on the defendant's own statement.^[30]

What people get wrong

• "No Miranda warning means no case." The warnings are required only for custodial interrogation, and the consequence of a violation is exclusion of the statement.^[2][8]
• "They needed a warrant to come in." Emergency aid is a recognized exception, and Randolph preserves entry to protect a resident from domestic violence.^[6][20]
• "I told them to leave, so everything after that is out." The Court of Appeals rejected that argument for officers who were present in response to a domestic dispute and not to search for evidence.^[22]
• "Any violation means the evidence is thrown out." The exclusionary rule does not automatically apply once a violation is found.^[7]
• "I can raise it at trial." The motion generally must be made in advance of trial.^[1]