Los Angeles County District Attorney: Prosecution and Criminal Justice

The Los Angeles County District Attorney's Office is the largest local prosecutorial office in the United States, responsible for charging and prosecuting criminal cases across a county of more than 10 million residents spanning 88 incorporated cities. This page covers the office's legal mandate, how felony and misdemeanor prosecution decisions are made, the stages of criminal proceedings, and the boundaries of the DA's authority relative to city attorneys, the federal government, and neighboring jurisdictions. Understanding this structure is relevant to anyone navigating the criminal justice system within Los Angeles County, from victims and defendants to researchers and civic observers.

Definition and scope

The Los Angeles County District Attorney (LADA) is a constitutional officer established under California Government Code § 26500, which requires each county in California to have a district attorney responsible for the prosecution of all public offenses. The LADA is elected countywide to a four-year term and heads an office employing approximately 1,000 deputy district attorneys, along with investigators, victim advocates, and administrative staff.

The office holds jurisdiction over felonies committed anywhere within Los Angeles County and over misdemeanors committed in unincorporated areas and in cities that have contracted prosecutorial services to the county. The LADA also handles specialized prosecution units covering homicide, sexual assault, environmental crimes, elder abuse, human trafficking, and public integrity offenses involving government corruption.

Scope, coverage, and limitations: The LADA's authority covers state criminal law violations occurring within Los Angeles County's geographic boundaries. It does not cover federal crimes, which are prosecuted by the United States Attorney's Office for the Central District of California (USAO-CDCA). Misdemeanors within the City of Los Angeles are prosecuted by the Los Angeles City Attorney, not the LADA. Cities with their own city attorney prosecution units — including Long Beach and Santa Monica — retain independent misdemeanor prosecution authority. The LADA does not have jurisdiction over criminal matters in neighboring counties such as Orange, Ventura, San Bernardino, or Riverside, even where suspects or victims may reside in Los Angeles County.

How it works

The prosecutorial process at the LADA follows a structured sequence from arrest through adjudication:

1. Law enforcement referral — Arresting agencies (LAPD, Los Angeles County Sheriff's Department, or any of the county's 46 independent police departments) submit arrest reports and evidence packages to the LADA for charging consideration.
2. Intake review (filing decision) — A deputy district attorney reviews the submitted materials and applies the standard articulated in the California Rules of Professional Conduct and internal LADA policy: whether sufficient admissible evidence exists to establish guilt beyond a reasonable doubt and whether prosecution serves the interests of justice.
3. Formal charging — If the filing standard is met, the deputy DA files a complaint (for misdemeanors) or presents a case to the grand jury or proceeds to a preliminary hearing (for felonies) to establish probable cause for an information.
4. Arraignment — The defendant is formally notified of charges in Superior Court and enters a plea.
5. Pretrial proceedings — Both sides exchange discovery under California's Penal Code § 1054 et seq., motions are argued, and plea negotiations may occur.
6. Trial or disposition — Cases resolve by guilty plea, dismissal, or jury or bench trial in Los Angeles County Superior Court (California Courts).
7. Sentencing — If convicted, the deputy DA presents sentencing recommendations; the judge retains sentencing authority under California law.
8. Appeals — The LADA's Appellate Division handles responses to defense appeals before the California Court of Appeal, Second Appellate District.

The LADA offices are distributed across the county in branch locations including Compton, Van Nuys, Torrance, Pomona, and Norwalk, aligned with the 25 courthouse districts of the Los Angeles County Superior Court system.

Common scenarios

The LADA handles the full spectrum of state criminal offenses. The most operationally significant categories include:

• Felony violent crimes — Murder, robbery, rape, kidnapping, and assault with a deadly weapon are reviewed by specialized units and carry mandatory review timelines under California Penal Code § 825 (48-hour arraignment requirement).
• Property crimes — Burglary, grand theft, vehicle theft, and receiving stolen property represent high-volume case categories processed through general felony units.
• Drug offenses — Possession, sales, and manufacturing charges may trigger diversion eligibility under California Penal Code § 1000 (deferred entry of judgment) or Proposition 36 drug treatment programs, depending on offense severity and defendant history.
• Domestic violence — The LADA operates a dedicated Domestic Violence Unit and, under California policy, prosecutors may proceed with charges even when a victim declines to cooperate, using evidence-based prosecution techniques.
• White-collar and public corruption — The Public Integrity Division investigates and prosecutes elected officials, government employees, and contractors for bribery, fraud, and abuse of public funds. This division operates with significant independence from political interference under California Government Code provisions.
• Juvenile delinquency — The LADA prosecutes juvenile matters in Los Angeles County Juvenile Court under California Welfare and Institutions Code § 602, handling cases where minors are alleged to have committed acts that would constitute crimes if committed by adults.

Contrast between felony and misdemeanor prosecution illustrates a key structural division: felony cases are prosecuted exclusively by the LADA in Superior Court, while misdemeanor prosecution authority is split between the LADA (for unincorporated areas and contracting cities) and city attorneys for incorporated municipalities. This split means that a defendant facing both felony and misdemeanor charges may interact with two separate prosecutorial offices simultaneously.

Decision boundaries

Not every criminal referral results in prosecution. The LADA applies a two-part test before filing charges:

• Evidentiary sufficiency — Evidence must be legally admissible and sufficient to prove each element of the charged offense beyond a reasonable doubt at trial.
• Interests of justice — Even where evidence is sufficient, prosecution may be declined based on factors including the severity of the offense, the defendant's criminal history, the availability of diversion or restorative justice alternatives, victim preferences, and resource allocation considerations.

This discretionary authority is broad but not unlimited. California Penal Code § 1054 and Brady v. Maryland, 373 U.S. 83 (1963), impose mandatory disclosure obligations on prosecutors. Prosecutorial misconduct findings by California courts can result in case dismissals, bar discipline under California Business and Professions Code § 6090.5, and referral to the State Bar of California (California State Bar).

The LADA does not have authority to direct law enforcement investigations — that authority rests with the Los Angeles County Sheriff and independent municipal police departments. The LADA similarly cannot override a judge's sentencing determination, though it can appeal an illegal sentence under California Penal Code § 1238.

Charging decisions in cases involving police use of force receive particular scrutiny. California Senate Bill 1421 (2018) requires public disclosure of certain police personnel records (California Penal Code § 832.7), affecting the evidentiary landscape in officer-involved cases the LADA reviews.

The broader context of county governance — including the Board of Supervisors' role in funding the office and the Sheriff's role in detention — is covered in the Los Angeles County Government Structure overview for readers seeking a full picture of how criminal justice institutions connect within the county's administrative framework.

References

• California Government Code § 26500 — District Attorney Duties
• California Penal Code § 1054 — Discovery in Criminal Cases
• California Penal Code § 832.7 — Peace Officer Records Disclosure (SB 1421)
• Los Angeles County District Attorney's Office — Official Site
• California Courts — Los Angeles County Superior Court
• U.S. Attorney's Office, Central District of California
• California State Bar — Attorney Regulation
• Brady v. Maryland, 373 U.S. 83 (1963)