How San Diego Law Enforcement Investigates Criminal Cases
by Marc Kohnen | Feb 27, 2025 | Criminal Defense Attorney

How San Diego Law Enforcement Investigates Criminal Cases

As a top criminal attorney in San Diego, I’ve seen firsthand how law enforcement investigates criminal cases. Understanding this process is critical not just for defendants but also for anyone seeking to protect their rights. Let me walk you through what happens during a criminal investigation in San Diego, step by step.

The Initial Phase of a Criminal Investigation

How Cases Are Initiated

Criminal investigations in San Diego usually begin with a report of a crime. This could be a 911 call, a complaint filed with local law enforcement, or even an observation by a police officer. Once a report is made, the police are tasked with determining whether a crime has occurred and, if so, who may be responsible.

Evidence Collection at the Scene

Law enforcement officers are meticulous when they arrive at a crime scene. They secure the area, gather physical evidence, and interview witnesses. Physical evidence might include anything from fingerprints and DNA to digital footprints on phones or computers.

The Role of Probable Cause

Probable cause is the cornerstone of any criminal investigation. Police must have a reasonable belief that a crime has occurred before proceeding with searches, arrests, or interrogations. Without probable cause, evidence can be challenged and dismissed in court.

The Investigation Process

Surveillance and Monitoring

San Diego law enforcement often uses surveillance to gather information. This could involve monitoring phone records, social media activity, or physical movements using GPS tracking. Surveillance is particularly common in drug and fraud investigations.

Search Warrants

To gather additional evidence, police may apply for search warrants. These must be approved by a judge and are based on evidence presented by the investigators. Without a proper warrant, any evidence collected may be deemed inadmissible in court.

Forensic Analysis

San Diego law enforcement collaborates with forensic experts to analyze evidence. Whether it’s DNA testing, fingerprint comparison, or ballistics, forensic science plays a critical role in building a case.

The Role of Interrogations

Techniques Used by Law Enforcement

Interrogations are designed to gather information from suspects. Police often use various psychological tactics to elicit confessions or admissions. As a defense attorney, I’ve encountered cases where individuals unknowingly incriminated themselves simply because they didn’t understand their rights.

Your Right to Remain Silent

One of the most critical rights every defendant has is the right to remain silent. Anything you say during questioning can and will be used against you. I always advise clients to consult with an attorney before answering any questions from law enforcement.

Arrests and Charges

When an Arrest Occurs

An arrest usually happens after police believe they have enough evidence to support probable cause. Sometimes, arrests occur on the spot, while other times, a warrant is issued after further investigation.

Filing of Charges

Once an arrest is made, the case is referred to the District Attorney’s office. The DA reviews the evidence and decides what charges, if any, will be filed. This decision can be influenced by the strength of the evidence and the severity of the alleged crime.

criminal investigations

Challenges in the Investigation Process

Misidentifications and Errors

Mistakes happen during investigations. Eyewitness misidentifications, mishandling of evidence, or reliance on unreliable informants can lead to wrongful arrests.

Violation of Rights

If law enforcement violates your rights—such as conducting an illegal search or interrogation—any resulting evidence may be inadmissible in court. As a defense attorney, I specialize in identifying and challenging these procedural missteps.

Building a Strong Defense

Reviewing the Evidence

My team and I meticulously review every piece of evidence against my clients. We look for inconsistencies, procedural errors, and alternative explanations for the allegations.

H3: Working with Experts

We often collaborate with forensic experts, private investigators, and other professionals to build a robust defense. This ensures that we leave no stone unturned.

Negotiating with Prosecutors

In many cases, a strong defense strategy involves negotiating with the prosecution. Whether it’s reducing charges or reaching a favorable plea deal, having an experienced attorney by your side can make all the difference.

Why You Need an Experienced Criminal Defense Attorney

Protecting Your Rights

Navigating the criminal justice system can be overwhelming. An experienced attorney ensures that your rights are protected at every stage of the process.

Fighting for the Best Outcome

Whether it’s negotiating a dismissal, reducing charges, or taking your case to trial, I am committed to fighting for the best possible outcome for my clients.

Conclusion

Understanding how San Diego law enforcement investigates criminal cases is crucial for anyone facing legal trouble. From the initial report to the filing of charges, every step of the process can impact your future. That’s why having a skilled criminal defense attorney on your side is essential.

If you or someone you know is under investigation or facing charges, don’t wait. Call us now to schedule a consultation with a criminal defense attorney in San Diego. We’re available 24/7 at (619) 398-2500 or contact us online.

FAQs

1. What should I do if I’m under investigation in San Diego?

Contact a criminal defense attorney immediately. Do not speak to law enforcement without legal representation.

2. Can evidence be thrown out if it was obtained illegally?

Yes. Evidence obtained through illegal searches or violations of your rights can be deemed inadmissible in court.

3. How long does a criminal investigation typically take?

The length of an investigation varies depending on the complexity of the case and the type of crime.

4. Do I have to talk to the police if they contact me?

No. You have the right to remain silent and consult with an attorney before answering any questions.

5. How can a defense attorney help during an investigation?

A defense attorney can protect your rights, provide legal advice, and build a strategy to counter the evidence against you.