Tampering with or Planting Evidence Under Penal Code 141

California Penal Code Section 141 pc, which is tampering with or planting evidence for the purposes of another person being charged is a serious offense.

Below our Los Angeles criminal lawyers explain the legal elements of this crime.

How Does the Prosecutor Prove the Offense of Tampering with or Planting Evidence?

To prove that the defendant is guilty of tampering evidence under penal code 141pc the prosecutor has to prove the following facts or elements1:

  • The defendant willfully and intentionally2 changed, planted or placed or made, hid or moved evidence3; AND
  • The defendant knew she/he was changing or planting, or placing or making or hiding or moving) the evidence; AND
  • When the defendant changed or planted, or placed or made or hid or moved the evidence, he/she intended that his/her action would result in someone being charged with a crime, or the evidence being wrongfully produced as genuine or true in a court proceeding.

Sylvia wants to collect workers compensation benefits from her employer so she pretends to injure herself on the job and then goes to a friend doctor and gets a false diagnosis. Because she intentionally used the false diagnosis as evidence to support her workers compensation case, she can be charged with the offense.

She may also be charged with workers compensation fraud.

Additional Element If Peace Officer
  • When the defendant acted, he/she was a peace officer.4
Example Of Peace Officer Violation

Arthur, a police officer, who has been on a drug trafficking case for months without result, wants to validate his reputation with the chief. He plants a bag of cocaine in one of the suspect’s cars and reports his findings to the station.

He then uses the planted evidence as probable cause to obtain a search warrant to search the suspect’s house where he discovers real evidence of drug trafficking. Because Arthur intentionally planted the evidence as if it were genuine evidence of drug trafficking, he can be charged with the offense.

Assembly Bill 1909

Under a new law approved by the governor of California on September 30th, 2016 California Penal Code 141 was expanded to include prosecuting attorneys who intentially alter, modify or withold evidence knowing that this evidence may have a material outcome on a case.5

Specific Intent

Any person can be charged with the offense as long as they intentionally and willingly tampered or planted the evidence and they did so with the specific intent that a person be convicted with a crime or that the evidence be produced as genuine.

Legal Defenses For Penal Code 141 PC

Mistake Of Fact

If you act without the requisite intent, as stated above, rather than act mistakenly, then you can use this as a defense.

False Accusation

If you were falsely accused, you cannot be charged with this offense. In such a situation, the facts will need to be investigated further to determine the real cause behind the accusation. However, without real facts to back up the accusation, the prosecutor will not be able to charge you with the offense.

Penalties For PC 141

Penalties for violating penal code 141 include:

Penalties Person Police Officer Prosecutor
Fine Max of $1,000
Probation Summary Probation Formal Probation Formal Probation
County Jail or Prison Max of 6 months county jail 1 Year county jail or 2,3, or 5 years prison6 16 months, 2 or 3 years7

Related Offenses

Next Steps If You Need Help

If you have been arrested and would like to learn more about how attorneys charge.

If you want to understand why its important to have an attorney represent you.

If you would like to discuss a pending case with an attorney contact the Aizman Law Firm at 818-351-9555 for a free confidential consultation.

Request A Free Consultation 818-351-9555 


  1. California Penal Code 141 []
  2. Someone commits an act “willfully” when he or she does it willingly or on purpose., http://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PEN&sectionNum=7 []
  3. The definition of “evidence” in this context is fairly broad and includes any kind of physical item that can be produced in a court proceeding.  Pen. Code, § 141. []
  4. Peace Officer Defined: Pen. Code, section 830 et seq., A peace officer is any person who comes within the provisions of Penal Code section 830 and who otherwise meets all standards imposed by law on a peace officer, and notwithstanding any other provision of law, no person other than those designated in this code section is a peace officer. Available at http://leginfo.legislature.ca.gov/faces/codes_displayText.xhtml?chapter=4.5.&part=2.&lawCode=PEN&title=3. []
  5. See Assembly Bill 1909 falsyfing evidence, avaialable at https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160AB1909 []
  6. California Penal Code 141(b) – A peace officer who knowingly, willfully, intentionally, and wrongfully alters, modifies, plants, places, manufactures, conceals, or moves any physical matter, digital image, or video recording, with specific intent that the action will result in a person being charged with a crime or with the specific intent that the physical matter, digital image, or video recording will be concealed or destroyed, or fraudulently represented as the original evidence upon a trial, proceeding, or inquiry, is guilty of a felony punishable by two, three, or five years in the state prison. Available at http://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum=141.&lawCode=PEN []
  7. California Penal Code 141(c) – A prosecuting attorney who intentionally and in bad faith alters, modifies, or withholds any physical matter, digital image, video recording, or relevant exculpatory material or information, knowing that it is relevant and material to the outcome of the case, with the specific intent that the physical matter, digital image, video recording, or relevant exculpatory material or information will be concealed or destroyed, or fraudulently represented as the original evidence upon a trial, proceeding, or inquiry, is guilty of a felony punishable by imprisonment pursuant to subdivision (h) of Section 1170 for 16 months, or two or three years. Available at http://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum=141.&lawCode=PEN []

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