Evidence |
---|
Part of the law series |
Types of evidence |
Relevance |
Authentication |
Witnesses |
Hearsay and exceptions |
Other common law areas |
Exculpatory evidence is evidence favorable to the defendant in a criminal trial that exonerates or tends to exonerate the defendant of guilt. [1] It is the opposite of inculpatory evidence, which tends to present guilt.
In many countries, including the United States, police and prosecutors are required to disclose to the defendant exculpatory evidence they possess before the defendant enters a plea (guilty or not guilty). [2] In some countries such as Germany, the prosecutor has to actively search for both exculpatory and inculpatory circumstances and evidence before filing of action. [3]
Per the Brady v. Maryland decision, prosecutors in the United States have a duty to disclose exculpatory evidence even if not requested to do so. While the prosecution is not required to search for exculpatory evidence and must disclose only the evidence in its possession, custody, or control, the prosecution's duty is to disclose all information known to any member of its team, e.g., police, investigators, crime labs, et cetera. In Brady v. Maryland, the U.S. Supreme Court held that such a requirement follows from constitutional due process and is consistent with the prosecutor's duty to seek justice. [4] The Brady doctrine is a pretrial discovery rule that was established by the United States Supreme Court in Brady v. Maryland (1963). [5] The rule requires that the prosecution must turn over all exculpatory evidence to the defendant in a criminal case. Exculpatory evidence is evidence that might exonerate the defendant. [6]
A victim is murdered by stabbing and a suspect is arrested for the murder. Evidence includes a knife covered with blood found near the victim and the accused found covered in blood at the murder scene. During the investigation, the police interview a witness claiming to have seen the stabbing. The witness makes a statement to the police that another unidentified person committed the crime, not the accused. The witness's statement is exculpatory evidence as it introduces reasonable doubt as to the guilt of the accused. The police either do not believe the witness's account or else find the witness unreliable and choose not to follow up on the lead. The prosecutor is obliged to inform the accused and their attorney of the witness's statement even though the police doubt the witness's version of events. Failure to do so would provide grounds for a motion to dismiss the charges or an appeal of a subsequent guilty verdict.
An inquisitorial system is a legal system in which the court, or a part of the court, is actively involved in investigating the facts of the case. This is distinct from an adversarial system, in which the role of the court is primarily that of an impartial referee between the prosecution and the defense.
In jurisprudence, prosecutorial misconduct or prosecutorial overreach is "an illegal act or failing to act, on the part of a prosecutor, especially an attempt to sway the jury to wrongly convict a defendant or to impose a harsher than appropriate punishment." It is similar to selective prosecution. Prosecutors are bound by a set of rules which outline fair and dispassionate conduct.
In common law jurisdictions, an acquittal means that the prosecution has failed to prove that the accused is guilty beyond a reasonable doubt of the charge presented. It certifies that the accused is free from the charge of an offense, as far as criminal law is concerned. The finality of an acquittal is dependent on the jurisdiction. In some countries, such as the United States, an acquittal prohibits the retrial of the accused for the same offense, even if new evidence surfaces that further implicates the accused. The effect of an acquittal on criminal proceedings is the same whether it results from a jury verdict or results from the operation of some other rule that discharges the accused. In other countries, like Australia and the UK, the prosecuting authority may appeal an acquittal similar to how a defendant may appeal a conviction — but usually only if new and compelling evidence comes to light or the accused has interfered with or intimidated a juror or witness.
The presumption of innocence is a legal principle that every person accused of any crime is considered innocent until proven guilty. Under the presumption of innocence, the legal burden of proof is thus on the prosecution, which must present compelling evidence to the trier of fact. If the prosecution does not prove the charges true, then the person is acquitted of the charges. The prosecution must in most cases prove that the accused is guilty beyond a reasonable doubt. If reasonable doubt remains, the accused must be acquitted. The opposite system is a presumption of guilt.
A prosecutor is a legal representative of the prosecution in states with either the adversarial system, which is adopted in common law, or inquisitorial system, which is adopted in civil law. The prosecution is the legal party responsible for presenting the case in a criminal trial against the defendant, an individual accused of breaking the law. Typically, the prosecutor represents the state or the government in the case brought against the accused person.
In the legal system of the United States, a Brady disclosure consists of exculpatory or impeaching information and evidence that is material to the guilt or innocence or to the punishment of a defendant. The term comes from the 1963 U.S. Supreme Court case Brady v. Maryland, in which the Supreme Court ruled that suppression by the prosecution of evidence favorable to a defendant who has requested it violates due process.
A miscarriage of justice occurs when an unfair outcome occurs in a criminal or civil proceeding, such as the conviction and punishment of a person for a crime they did not commit. Miscarriages are also known as wrongful convictions. Innocent people have sometimes ended up in prison for years before their conviction has eventually been overturned. They may be exonerated if new evidence comes to light or it is determined that the police or prosecutor committed some kind of misconduct at the original trial. In some jurisdictions this leads to the payment of compensation.
Brady v. Maryland, 373 U.S. 83 (1963), was a landmark U.S. Supreme Court decision holding that under the Due Process Clause of the Constitution of the United States, the prosecution must turn over to a criminal defendant any significant evidence in its possession that suggests the defendant is not guilty.
Actual innocence is a special standard of review in legal cases to prove that a charged defendant did not commit the crimes that they were accused of, which is often applied by appellate courts to prevent a miscarriage of justice.
Shareef Cousin is an African-American man from New Orleans who was convicted of the first-degree murder of Michael Gerardi in 1996 and sentenced to death as a juvenile in Louisiana. At age 17, he became the youngest condemned convict to be put on death row in Louisiana, and one of the youngest in the United States.
Inculpatory evidence is evidence that shows, or tends to show, a person's involvement in an act, or evidence that can establish guilt. In criminal law, the prosecution has a duty to provide all evidence to the defense, whether it favors the prosecution's case or the defendant's case. Evidence that tends to show a person's innocence is considered exculpatory evidence.
Doyle v. Ohio, 426 U.S. 610 (1976), is a United States Supreme Court case regarding the Due Process rights of the Fourteenth Amendment.
Kyles v. Whitley, 514 U.S. 419 (1995), is a United States Supreme Court case that held that a prosecutor has an affirmative duty to disclose evidence favorable to a defendant pursuant to Brady v. Maryland and United States v. Bagley.
In United States criminal procedure, the Federal government and certain states have reciprocal discovery laws that compel defendants to disclose some information to prosecutors before trial. Within the federal court system, this material is referred to as reverse Jencks Act material, after the United States Supreme Court case which established the principle, Jencks v. United States.
Giglio v. United States, 405 U.S. 150 (1972), is a United States Supreme Court case in which the Court held that the prosecution's failure to inform the jury that a witness had been promised not to be prosecuted in exchange for his testimony was a failure to fulfill the duty to present all material evidence to the jury, and constituted a violation of due process, requiring a new trial. This is the case even if the failure to disclose was a matter of negligence and not intent. The case extended the Court's holding in Brady v. Maryland, requiring such agreements to be disclosed to defense counsel. As a result of this case, the term Giglio material is sometimes used to refer to any information pertaining to deals that witnesses in a criminal case may have entered into with the government.
Napue v. Illinois, 360 U.S. 264 (1959), was a United States Supreme Court case in which the Court held that the knowing use of false testimony by a prosecutor in a criminal case violates the Due Process Clause of the Fourteenth Amendment to the United States Constitution, even if the testimony affects only the credibility of the witness and does not directly relate to the innocence or guilt of the defendant.
United States v. Bagley, 473 U.S. 667 (1985), was a Supreme Court of the United States case that established the standard for materiality under Brady v. Maryland.
United States v. Ruiz, 536 U.S. 622 (2002), was a decision by the United States Supreme Court in which the Court held that Brady v. Maryland did not require prosecutors to disclose impeachment evidence during plea bargaining.
United States v. Agurs, 427 U.S. 97 (1976), was a case heard by the Supreme Court of the United States in 1976. The case clarified the obligation of a prosecutor to provide exculpatory evidence to a criminal defendant.
In the law of evidence, consciousness of guilt is a type of circumstantial evidence that judges, prosecutors, and juries may consider when determining whether a defendant is guilty of a criminal offense. It is often admissible evidence, and judges are required to instruct juries on this form of evidence. Deceptive statements or evasive actions made by a defendant after the commission of a crime or other wrongdoing are seen as evidence of a guilty conscience. These are not the typical behaviors of an innocent person, and a "defendant's actions are compared unfavorably to what a normal, innocent person would have done, with the implication that the discrepancy indicates guilt".
exculpatory evidence Evidence tending to establish a criminal defendant's innocence ● The prosecution has a duty to disclose exculpatory evidence in its possession or control when the evidence may be material to the outcome of the case.