Defending Against Drug Charges When Police Used a Confidential Informant

When police build a drug case on a confidential informant, they are relying on a witness who is usually working off their own charges or getting paid. That creates an obvious credibility problem, and it creates legal openings. Depending on the informant’s role, your attorney may be able to force the state to reveal their identity, challenge the search warrant their tip produced, or attack their reliability in front of a jury. The key question is whether the informant was a tipster who merely passed along information or an active participant in the alleged transaction.

Here is how informant-based drug cases are defended in South Carolina in 2026.

The Informer’s Privilege and Its Limits

The government generally has a privilege to keep an informant’s identity secret. That rule protects the flow of information to law enforcement. But it is not absolute.

The controlling case is Roviaro v. United States, 353 U.S. 53 (1957), where the U.S. Supreme Court held that the informer’s privilege is limited by due process. When disclosure is relevant and helpful to the defense, or necessary for a fair determination of the case, the identity must be revealed. In South Carolina, Rule 5 of the Rules of Criminal Procedure is the mechanism for obtaining discovery in these cases.

Courts often resolve these disputes through an in-camera hearing, where the judge reviews the informant’s role privately before deciding whether the defense is entitled to the identity.

Tipster or Participant? The Distinction That Decides Disclosure

This is the dividing line that matters most.

A tipster simply gives police information that leads to an investigation. Courts usually protect their identity, because their testimony would not help determine guilt or innocence.

An active participant took part in the alleged transaction, arranged the buy, was present, or handled the drugs or money. Courts are far more likely to order disclosure, because that person is a material witness who may be the only one who can contradict the officer’s account.

Factors that weigh toward disclosure include whether the informant was an active participant, whether they were the only witness to the alleged transaction, and whether their testimony could support a defense. Your attorney strengthens the motion by tying the informant’s expected testimony to a specific defense theory, rather than simply speculating that it might help. Courts respond to specificity.

Challenging a Search Warrant Built on an Informant’s Tip

Many drug cases start with a warrant supported by an affidavit that says a “reliable confidential informant” provided information. That affidavit can be attacked.

Your attorney examines:

• Basis of knowledge. Did the informant see something personally, or repeat a rumor?
• Reliability. Has this informant been accurate before, and does the affidavit actually establish that or just assert it?
• Corroboration. Did police independently verify anything the informant said, or did they simply act on the word alone?
• Staleness. Information ages. A tip about activity weeks earlier may not support probable cause today.
• False statements. Under Franks v. Delaware, if an officer knowingly or recklessly included false information in the affidavit, the defense can request a hearing and potentially invalidate the warrant.

If the warrant falls, the evidence it produced can be suppressed, and in a drug case that frequently ends the prosecution.

Attacking Informant Credibility

Even where the identity is disclosed and the case proceeds, informants are vulnerable witnesses. Effective cross-examination explores:

• What they were promised. Dropped charges, reduced sentences, or cash payments give a powerful motive to deliver results.
• Their own record. Many informants have significant criminal histories, including crimes of dishonesty.
• Drug use. Informants are frequently users themselves, which affects perception and memory.
• Controlled buy procedures. Was the informant searched before and after? Was the buy recorded? Was an officer watching continuously? Gaps in procedure create reasonable doubt about where the drugs actually came from.
• Prior inconsistent statements. Reports, recordings, and testimony rarely line up perfectly.

Your attorney also requests any agreement between the informant and the state, which the defense is entitled to explore because it bears directly on bias.

What the Underlying Charges Mean

Informant cases often result in trafficking or distribution charges under Section 44-53-370 of the state code, where trafficking is defined by weight and carries mandatory minimums that cannot be suspended. Because the stakes are that high, suppressing the evidence or undermining the informant is often the difference between mandatory prison and a manageable outcome.

Frequently Asked Questions

Do I have a right to know who the informant was?

Not automatically. Disclosure depends on the informant’s role. Courts are far more likely to order it when the informant actively participated in the alleged transaction rather than simply passing along a tip.

Can a case be built entirely on an informant’s word?

It can be charged that way, but it is a weak case. Without recordings, surveillance, or a controlled buy that follows proper procedure, the state is asking a jury to trust a witness with obvious motives.

What happens if the search warrant was based on false information?

Under Franks v. Delaware, your attorney can request a hearing. If an officer knowingly or recklessly included false statements necessary to probable cause, the warrant can be invalidated and the evidence suppressed.

Do informants get paid for these cases?

Often yes, either in money or in leniency on their own charges. That arrangement is legitimate grounds for cross-examination because it goes directly to bias.

Talk to a Rock Hill Drug Lawyer About Your Informant Case

Informant cases look strong on paper and frequently are not. The warrant affidavit, the buy procedure, and the informant’s motives are all contestable, and pressing them early preserves the recordings and records that matter. At Okoye Law, our drug charge defense team files the disclosure and suppression motions these cases call for across Rock Hill, Fort Mill, and York County. Call quickly, and ask about our flexible payment options. Contact Okoye Law for a confidential consultation.