Pre-Filing Intervention: Stop a Criminal Case Before Charges

Quick Answer

Pre-filing intervention is criminal defense work done after arrest or citation but before the District Attorney files charges. Strong pre-filing work can persuade the DA to decline filing, reduce a felony to a misdemeanor, or divert the case altogether. In LA County, the window between arrest and the filing decision is often where cases are won, and it’s usually wasted because the suspect waited to be arraigned.

Key Takeaways

Pre-filing intervention happens between arrest/citation and the DA’s filing decision, usually 1-60 days.
A defense attorney can present mitigating evidence, character information, witness statements, video, and legal analysis directly to the filing deputy.
Successful pre-filing work can result in: declination (“DA Reject”), reduced charges, diversion offers, or referral to City Attorney instead of DA.
The DA must charge within statute of limitations, 1 year for most misdemeanors, 3+ years for felonies.
In LA County, the LADA and various City Attorney offices have specific filing units that respond to defense submissions.
Acting fast matters: cases get filed on a 48-hour clock for in-custody suspects, out-of-custody filings can take weeks.

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The pre-filing window, and why it matters

Most people think a criminal case starts at arraignment. It actually starts at the filing decision: a prosecutor reviewing the police report decides whether to file, what to file, and at what severity. Once charges are filed, defense work shifts to litigation. Before they’re filed, the same work can prevent the case from ever existing.

How the filing decision actually works in LA County

In Los Angeles County, criminal filings split between two offices:

LA County District Attorney — handles all felonies countywide, plus misdemeanors in unincorporated areas and in cities that contract with the DA.
City Attorney offices — handle most misdemeanors in incorporated cities (LA City Attorney for LAPD, Beverly Hills City Attorney for BHPD, Santa Monica, Long Beach, Pasadena, etc., each handle their own jurisdiction).

A filing deputy reviews the police report, weighs the evidence, and decides one of four things: file as filed, reduce, reject, or send it back for further investigation.

What effective pre-filing work looks like

The pre-filing letter

A focused 2-4 page letter to the filing deputy, identifying the case by report number, arrest date, and arresting agency. The letter addresses the elements of the suspected charge, presents evidence the police did not capture, identifies witnesses the police did not interview, points out legal defects in the investigation (Miranda, search, identification), and offers mitigation (no prior record, employment, treatment in progress, restitution made).

Supporting materials

Surveillance video the police did not pull.
Cell phone video, photos, text messages, social media.
Character letters from employers, clergy, family.
Proof of treatment enrollment (drug treatment, anger management, AA).
Proof of restitution paid or in escrow.
Witness declarations under penalty of perjury.

Direct meeting with the filing deputy

For close cases, an in-person meeting with the deputy (or their supervisor) often decides the outcome. The defense lawyer walks through the case with the deputy, answers questions, and discusses what charge, if any, fairly reflects the conduct.

Outcomes pre-filing work can achieve

Declination (“DA Reject”). No charges filed, the matter ends.
Reduction. A felony filed as a misdemeanor, a wobbler resolved at the lower level, multiple counts consolidated.
Diversion offer. DA agrees in advance to offer judicial diversion under PC 1000 (drug), PC 1001.36 (mental health), PC 1001.80 (military), or PC 1001.95 (misdemeanor diversion).
Civil resolution. Many shoplifting and petty disputes can be resolved as civil restitution claims without criminal filing.
Referral elsewhere. A case the DA was going to file is referred to the City Attorney as a misdemeanor, or to a community court program.

Time pressure, and the statute of limitations

In-custody filings happen within 48 hours of arrest. If the person is out on cite-release or bail, the DA has the statute of limitations to decide: 1 year for most misdemeanors (PC § 802(a)), 3 years for most felonies (PC § 801), longer for specified offenses. Pre-filing intervention is most effective in the first 2-4 weeks after arrest, before the filing deputy has set the case for filing.

What pre-filing CAN’T do

Pre-filing intervention is not a guarantee. If the evidence is overwhelming and the conduct is serious, charges will be filed. The honest assessment is the same in every case: pre-filing work moves the needle on close cases, on close calls, and on charging-level decisions. It does not erase strong evidence.

What to do right now

If you have been arrested or cited and the case has NOT been filed yet, that’s your window.
Save everything: citation, booking papers, property receipts, business cards from officers.
Do not discuss the case with anyone. Don’t post about it.
Do not contact alleged victims or witnesses yourself.
Get counsel on board now, every week that passes is a week of work that could have been done.

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More Criminal Defense Resources

Charged with a crime in LA? Start at the criminal defense practice overview.
Constitutional Defense in California: how the Bill of Rights actually works in your case.
First Amendment Defense: criminal threats (PC 422), protest arrests, recording police.
Fourth Amendment Defense: searches, seizures, motions to suppress under PC 1538.5.
What to do when pulled over in California
What to do if you are arrested in California
Charge areas: DUI, Drug Crime, Domestic Violence, Weapons, Theft