What happens if prosecuter presents false evidence in a jury in trial?

Answer 1

If a prosecutor discovers during the course of a trial, or if it is noticed by the defendant's attorney that false or misleading evidence has been presented, then the judge and the jury will be so informed to disregard the evidence. Generally speaking, a prosecutor nor a defense attorney will knowingly present false evidence. Depending on the circumstances a judge may call a mistrial, and an entire new trial will take place at a future date. If the prosecutor's case is heavily based on false evidence, then there's a chance that there will be no new trial and the defendant is free of all charges.In situations where the trial is over, and the fact that false evidence was submitted that convicts the defendant, then an appeals court will overturn the verdict. If the defense had presented false evidence that caused a not guilty verdict to be rendered, then that attorney is subject to fines or criminal charges. Whether a defendant can be tried again is doubtful. Depending on the circumstances, new charges might cause a new trial for the former defendant.