When is a motion to suppress evidence typically filed?

A motion to suppress evidence is typically filed before the trial begins because it is a pre-trial motion aimed at excluding certain evidence from being presented in court. This motion is often based on the argument that the evidence was obtained in violation of a defendant's rights, such as through an unlawful search and seizure. Filing it before the trial allows the court to make a determination about the admissibility of the evidence in advance, ensuring that the trial proceeds without potentially prejudicial material being introduced.

Filing during jury selection or after the trial has concluded would not be effective, as any issues regarding the admissibility of evidence should be addressed prior to presenting the case to a jury. Additionally, a motion to suppress can't be filed at any time by the plaintiff, as it must be based on specific legal grounds and typically follows procedural rules that dictate its timing relative to the trial phase.