If a person comes into this state in obedience to a summons directing him to attend and testify in this state he shall not, while in this state pursuant to such summons be subject to arrest or the service of process, civil or criminal, in connection with matters which arose before his entrance into this state under the summons.
     If a person passes through this state while going to another state in obedience to a summons to attend and testify in that state or while returning therefrom, he shall not while so passing through this state be subject to arrest or the service of process, civil or criminal, in connection with matters which arose before his entrance into this state under the summons.

Terms Used In Illinois Compiled Statutes 725 ILCS 220/4

  • Arrest: Taking physical custody of a person by lawful authority.
  • Service of process: The service of writs or summonses to the appropriate party.
  • State: when applied to different parts of the United States, may be construed to include the District of Columbia and the several territories, and the words "United States" may be construed to include the said district and territories. See Illinois Compiled Statutes 5 ILCS 70/1.14
  • Summons: Another word for subpoena used by the criminal justice system.
  • Testify: Answer questions in court.