Former Cook County Felony Prosecutor
Obstruction of Justice Lawyer Chicago
Experienced Chicago Criminal Defense Attorney Defending Obstruction of Justice Charges
Obstruction of justice is a serious criminal offense under Illinois law that can lead to felony charges, prison time, substantial fines, and a permanent criminal record. Many people charged with obstructing justice are surprised to learn that the offense does not require violence or a major criminal scheme. In many situations, obstruction of justice charges arise from alleged false statements, attempts to protect another person, concealing evidence, or interfering with a police investigation.
Even a momentary decision made during a stressful encounter with a law enforcement officer can result in serious felony charges with life-changing consequences.
If you are facing obstruction of justice charges in Chicago or Cook County, it is critical to speak with an experienced criminal defense attorney immediately.
Andrew M. Weisberg is a former Cook County prosecutor and highly experienced Chicago criminal defense lawyer who has represented clients charged with serious criminal offenses throughout Illinois for decades. His law offices handle felony charges, obstruction charges, federal charges, white collar crimes, sex crimes, drug offenses, violent offenses, and other serious criminal cases in both state and federal courts.
As a former prosecutor and experienced defense attorney, Andrew M. Weisberg understands how prosecutors attempt to prove obstruction of justice and how defense attorneys can challenge the prosecution’s evidence, intent allegations, and investigative procedures.
If you have been charged with obstruction of justice in Chicago, contact the Law Offices of Andrew M. Weisberg immediately for a free consultation and confidential consultation.
Understanding Obstruction of Justice Under Illinois Law
Obstruction of justice is defined under 720 ILCS 5/31-4 of the Illinois Criminal Code.
Under Illinois law, a person commits obstruction of justice when they knowingly commit acts intended to interfere with the due administration of justice, prevent the apprehension or prosecution of another person, or interfere with an investigation conducted by a law enforcement officer, governmental agency, or other governmental agency.
The legal definition of obstruction of justice is broad, and prosecutors often apply the statute in many different factual situations.
A person commits obstruction of justice when they knowingly:
- Furnish false information
- Furnish materially false information
- Conceal or disguise physical evidence
- Destroy physical evidence
- Plant false evidence
- Provide a false name to police officers
- Interfere with a police investigation
- Attempt to influence witness testimony
- Prevent another person’s apprehension or prosecution
The key issue in many obstruction cases is whether the defendant knowingly intended to interfere with the legal process or due administration of justice.
Defense attorneys frequently challenge the prosecution’s claim that the defendant possessed the specific intent necessary to constitute obstruction under Illinois law.
Common Examples of Obstruction of Justice
Obstruction of justice occurs in many different ways, and the charge often accompanies other criminal allegations.
Common situations leading to obstruction of justice charges include:
Providing False Information to Police Officers
One of the most common allegations involves furnishing false information to a police officer or law enforcement officer during a criminal investigation.
Examples may include:
- Giving a false name
- Providing false identifying information
- Making misleading statements
- Denying knowledge of criminal activity
- Attempting to protect another person
A person who knowingly furnishes materially false information during an investigation may face felony charges even if they were not involved in the underlying offense.
Destroying or Concealing Evidence
Prosecutors frequently pursue obstruction charges involving destruction or concealment of physical evidence.
Examples may include:
- Deleting electronic communications
- Destroying documents
- Disguising physical evidence
- Hiding weapons or other evidence
- Removing items from a crime scene
Destroying evidence during an investigation may significantly increase the seriousness of the prosecution’s case.
Witness Intimidation and Interference
Obstruction allegations sometimes involve accusations of intimidating witnesses or interfering with testimony.
These cases may involve:
- Pressuring witnesses to change statements
- Discouraging cooperation with investigators
- Attempting to influence testimony
- Interfering with judicial proceedings
Helping Another Person Avoid Arrest
Obstruction charges are also common when prosecutors believe someone attempted to help another person avoid apprehension or prosecution.
Penalties for Obstruction of Justice in Illinois
Obstruction of justice is generally classified as a Class 4 felony under Illinois law.
Potential penalties include:
- One to three years in prison
- Fines up to $25,000
- Probation or conditional discharge
- Court costs and fees
- Permanent felony conviction consequences
If obstruction of justice is committed in furtherance of gang activity, the offense may be elevated to a Class 3 felony carrying penalties of two to five years in prison.
A conviction for obstruction of justice can result in:
- A permanent criminal record
- Difficulty obtaining employment
- Professional licensing consequences
- Loss of firearm rights
- Serious damage to future opportunities
Even when probation is available, the long-term consequences of a felony conviction can be severe.
Obstruction Charges Often Accompany Other Criminal Charges
Obstruction of justice is rarely a standalone crime and is often charged alongside other allegations.
Common related criminal charges include:
- Drug offenses
- Weapons offenses
- White collar crimes
- Fraud allegations
- Conspiracy allegations
- Domestic battery
- Violent crimes
- Sex offenses
Federal obstruction charges frequently arise alongside allegations involving wire fraud, money laundering, conspiracy, or grand jury investigations.
Federal Versus State Obstruction Charges
Although this page focuses on state obstruction of justice charges under Illinois law, obstruction is also commonly prosecuted as a federal crime.
Federal obstruction charges involve:
- Grand jury proceedings
- Federal investigations
- Federal Sentencing Guidelines
- Federal evidence rules
- Proceedings in federal courts
Federal obstruction cases often move very quickly and require immediate legal representation.
A defense attorney handling federal obstruction allegations should understand the unwritten procedures, pacing, and practices of the Dirksen Federal Courthouse in Chicago.
Defending Against Obstruction of Justice Charges
A lawyer defending against obstruction of justice charges plays a critical role in challenging the prosecution’s evidence regarding intent, causation, and alleged procedural violations.
Successfully defending obstruction charges requires careful analysis of:
- Police reports
- Witness statements
- Electronic evidence
- Surveillance footage
- Circumstances surrounding the investigation
- Constitutional issues
Defense attorneys evaluate alleged obstructive acts to build a targeted defense strategy focused on achieving the best possible outcome.
Lack of Intent
Defense attorneys must often demonstrate that the defendant lacked the specific intent necessary to obstruct justice.
Mistakes, confusion, panic, or misunderstandings do not necessarily constitute obstruction.
Challenging the Prosecution’s Evidence
The prosecution must prove every element beyond a reasonable doubt.
A strong defense strategy may involve challenging:
- Inconsistent witness statements
- Weak evidence
- Police assumptions
- Interpretation of statements
- Alleged intent
Challenging Unlawful Police Conduct
Attorneys frequently work to suppress evidence obtained unlawfully, including evidence gathered in violation of Miranda rights or through unlawful search and seizure.
If critical evidence is excluded, the prosecution’s case may weaken significantly.
Negotiated Resolutions
Defense lawyers often negotiate with prosecutors for reduced charges, deferred prosecution alternatives, misdemeanor resolutions, or other favorable outcomes before the case reaches trial.
Avoiding a permanent felony record is frequently one of the most important goals in obstruction cases.
Why Hiring an Experienced Criminal Defense Lawyer Matters
When you are facing obstruction of justice charges, choosing the right criminal defense attorney can significantly impact the outcome of your case.
As a former Cook County prosecutor, Andrew M. Weisberg understands:
- How Illinois prosecutors build obstruction cases
- How police investigations develop
- How prosecutors attempt to establish intent
- What factors influence plea negotiations and sentencing
His law offices provide:
- Thorough investigation
- Strategic defense planning
- Prompt communication
- Aggressive courtroom advocacy
- Extensive experience defending felony charges
Federal and serious state investigations require responsive, aggressive, and proactive legal representation from experienced attorneys.
Speak With a Chicago Obstruction of Justice Defense Attorney Today
If you are facing obstruction of justice charges in Chicago, Cook County, or anywhere throughout Illinois, it is important to act quickly.
Andrew M. Weisberg provides aggressive criminal defense representation for clients facing serious felony charges throughout Cook County and throughout Illinois.
His law offices work tirelessly to challenge the prosecution, protect constitutional rights, and pursue the best possible outcome for every client.
Contact Andrew M. Weisberg for a free consultation by calling (773) 908-9811 anytime, day or night, or complete the online Case Review form for a confidential consultation regarding your case.




















