Complaint After Warrantless Arrest

Complaint After Warrantless Arrest

Earlier sections established that an officer holding probable cause may arrest in public without first going to a judge. In United States v. Watson, postal inspectors arrested a suspect at a restaurant on probable cause and without a warrant, and the Court sustained the arrest because its prior decisions uniformly treated probable cause, not a warrant, as the constitutional requirement for a felony arrest.¹ Atwater v. City of Lago Vista carried the same logic to a seatbelt violation, holding that an officer with probable cause to believe an individual committed even a very minor offense in the officer's presence may make a custodial arrest.² Those cases say when a warrantless arrest is lawful, and they leave open what a court must see afterward. Rule 5(b) of the Federal Rules of Criminal Procedure answers that question for federal prosecutions.³

The step a warrantless arrest skips is the reason the rule exists. A warrant carries a neutral judge's advance judgment that the facts show probable cause. An arrest without one bypasses that predetermination and substitutes an after-the-event justification, which is exposed to the distortions of hindsight.⁴ The law tolerates the substitution because requiring a magistrate's review before every arrest would be an intolerable handicap for law enforcement, so the officer's on-the-scene assessment justifies the arrest and a brief detention for the administrative steps that follow it.⁵ Once the suspect is in custody, the reason for dispensing with a judge falls away, since there is no longer any danger of escape while the evidence goes to a magistrate.⁶ The federal rules respond in two steps, taken in order below: a complaint that puts the probable-cause showing in writing, and a warrant requirement that applies before a defendant arrested elsewhere is moved.

The Prompt Complaint

When a defendant is arrested without a warrant, a complaint meeting Rule 4(a)'s requirement of probable cause must be promptly filed in the district where the offense was allegedly committed.⁷ The rule has three working parts. The first is a document, the complaint. The second is its content, which must satisfy Rule 4(a): the complaint or the affidavits filed with it must establish probable cause to believe that an offense has been committed and that the defendant committed it.⁸ The third is timing and place, since the filing must be prompt and must be made in the charging district rather than the district where the arrest happened to occur. The two-part content requirement mirrors the showing needed for an arrest warrant, which is a fair probability that a crime was committed and that the person to be arrested committed it.⁹

Each part answers a different weakness of warrantless arrest. Borrowing Rule 4(a) as the content standard protects the incentive to seek warrants, because if a post-arrest complaint could succeed on less than a warrant application requires, an officer could skip the judge at the outset and meet a lower bar afterward. Beck v. Ohio, quoting Wong Sun, made the matching point about the constitutional standard: the requirements of reliability and particularity cannot be less stringent without a warrant than with one, or a principal incentive to obtain warrants would be destroyed.¹⁰ The promptness requirement does separate work. The complaint is the written record that stands in for the warrant application, and a record produced long after the arrest does little to answer the worry that the justification is being assembled with hindsight. Because the rule text says promptly and supplies no hour count, a fact pattern must be read for whether the filing followed the arrest closely or trailed it by an unexplained stretch.

A court therefore asks the same question twice, at different times and under different sources. The Fourth Amendment asks whether the facts available to the officers at the moment of arrest would lead a person of reasonable caution to believe an offense had been committed.¹¹ Rule 5(b), through Rule 4(a), asks whether the complaint and its affidavits establish probable cause on both the offense and the defendant's commission of it. Both questions are decided on facts, and neither is satisfied by conclusions. In Beck the arresting officer testified only that he knew the suspect's appearance and prior record and that someone, unnamed, had told him something, unspecified, and the Court reasoned that treating such a showing as probable cause would let anyone with a record be arrested at will.¹² A complaint built on the same material gives the judge nothing to evaluate, so it fails Rule 4(a) for the same reason.

Two cautions keep this rule from blurring into neighboring ones. The first is a placement trap: Rule 5(b) sends the complaint to the district where the offense was allegedly committed, so a complaint filed only where the arrest happened to occur has not done what the rule requires. The second is a confusion with a separate safeguard. Gerstein v. Pugh held that the Fourth Amendment requires a prompt judicial determination of probable cause as a prerequisite to extended restraint of liberty after a warrantless arrest.¹⁵ That determination may be made ex parte on the same standard as arrest, and under County of Riverside v. McLaughlin one made within 48 hours is presumptively prompt, while a later one shifts to the government the burden of showing a bona fide emergency or other extraordinary circumstance.¹⁶ The constitutional determination can be accomplished without the defendant present, whereas the initial appearance is required by rule or statute and does require the defendant's attendance, and the two are often combined in a single proceeding.¹⁷ The 48-hour benchmark belongs to the constitutional determination, and Rule 5(b) itself states no number of hours.

Warrant Before Transfer

The complaint also drives a second rule, which governs a defendant arrested without a warrant in a district other than the one where the offense was allegedly committed. The earlier discussion of the place of appearance showed that such a defendant may appear in the district of arrest and that a magistrate judge there handles the transfer to the charging district. Rule 5(c)(3)(B) adds a precondition for the warrantless case: the district court where the offense was allegedly committed must first issue a warrant before the magistrate judge transfers the defendant to that district.²⁰ The natural source of that warrant is the Rule 5(b) complaint, since Rule 4(a) directs a judge to issue an arrest warrant when the complaint or affidavits establish probable cause.²¹

The sequence places a judge of the charging court between the officer's decision and the defendant's movement. Without it, a person arrested on an officer's on-the-scene assessment alone could be sent across districts before any judge of the court that will hear the case had found probable cause on a written record. The rule closes that gap by tying the move to a warrant issued by the charging district, which has the complaint in front of it. The two provisions therefore work as a chain: a warrantless arrest, a complaint in the charging district, a warrant from that district, and only then the transfer. The precondition also belongs only to the warrantless case, because the text conditions it on the arrest having been made without a warrant, and a defendant arrested on a warrant already has a judge's probable-cause finding behind the arrest.²²