A motion to prevent evidence such as a confession or a bloody knife from being admitted in court is known as a motion to what?

A motion to suppress is used to prevent certain pieces of evidence from being introduced in court. This legal mechanism is often invoked when a party believes that the evidence was obtained in violation of legal rights or constitutional protections, such as through improper interrogation techniques or illegal searches.

For example, if a confession was obtained without the proper Miranda warning, or if a bloody knife was discovered during an unlawful search, a motion to suppress would argue that this evidence should not be considered in the trial because it could compromise the fairness of the proceedings or violate the defendant's rights.

The legal concept behind this motion is integral to ensuring that the justice system operates within the confines of the law and protects the rights of individuals, making it a foundational aspect of criminal procedure.