Delaware Code Title 11. Crimes and Criminal Procedure § 3502. Testimonial immunity

(a) A party to an offense under Chapter 15 of this title may be required to furnish evidence, or to testify concerning the offense.

(b) No evidence or testimony required to be furnished under this section, nor any information directly or indirectly derived from such evidence or testimony, may be used against the witness in any criminal case, except in a prosecution for perjury or contempt.

(c) If a witness or other person is or may be called to produce evidence at a hearing or trial under Chapter 15 of this title, or at an investigation brought by the Attorney General under § 1509 of this title, the Superior Court for the county in which the hearing, trial or investigation is or may be held shall, upon certification in writing of such request by the Attorney General, require such person to produce the evidence, notwithstanding the person's refusal to do so on the basis of the privilege against self-incrimination.