Criminal Investigation

Affidavit

A sworn, written statement of the information known to an officer that serves as the basis for the issuance of an arrest warrant or a search warrant.

Arrest

Any interference with a person which, if not privileged, would constitute false imprisonment.

Arrest Warrant

A judicial order commanding that a particular person be arrested and brought before a court to answer a criminal charge.

Charging

The act of formally asserting that a particular person is to be prosecuted for a crime.

Detention or Investigative Detention

Temporary and limited interference with the freedom of a person for investigative purposes.

Due Process

Fairness through judicial proceedings.

Due Process Clause

The title of clauses appearing in both the 5th and 14th amendments of the Constitution of the U.S.

Exigent Circumstances

An exception to the requirement that law enforcement officers have a search warrant; occurs when there is a compelling need for official action and there is no time to get a warrant.

Fruits of the Poisonous Tree Doctrine

Evidence obtained from an unreasonable search and seizure cannot be used as the basis for learning about or collecting new admissible evidence not known about before.

Procedural Criminal Law

That branch of criminal law that defines what can and cannot be done with, or to, people. It deals with processess of the arrest, search and seizure, interrogations, confessions, admissibility of evidence, and testifying in court.

Probable Cause

More than a suspicion but less than actual knowledge. 51% sure, more likely than not.

Search

The process of looking for evidence of a crime.

Search and Seizure

The process of looking for evidence of a crime and taking that evidence into the custody of a law enforcement agency.

Search Warrant

Written authorization by a judge allowing law enforcement officers to look for specified items of evidence of a crime in a specified place.

Stop and Frisk

A limited pat down of the outer clothing of a person encountered by law enforcement officer when the person is acting suspiciously, and the officer, concerned about safety, seeks to determine if the person has a weapon.

Stop and Identify

Stop and identify" statutes are laws in the United States that require persons detained under certain circumstances to identify themselves to a police officer. In Hiibel v. Sixth Judicial District Court of Nevada, 542 U.S. 177 (2004), the Supreme Court of

Substantive Criminal Law

The elements that describe and define a crime.

Unreasonable Search and Seizure

Search of an individual or his/her premises (inc. a car) and/or seizure of evidence found in a search by a law enforcement officer without a search warrant and without "probable cause" to believe evidence of a crime is present. Such a search and/or seizur

Is a "John/Jane Doe" arrest warrant valid under any circumstance? Explain.

Yes. In cases that have DNA evidence, prosecutors are getting indictments against "John or Jane Does" based on their DNA profiles.