N.C. Gen. Stat. § 1-357: Incriminating answers not privileged; not used in criminal proceedings.

No person, on examination pursuant to this Article, is excused from answering any question on the ground that it will tend to convict him of the commission of a crime or that he has, before the examination, executed any conveyance, assignment or transfer of his property for any purpose, but his answer shall not be used as evidence against him in any criminal proceeding or prosecution. (C.C.P., s. 264; 1868-9, c. 95, s. 2; Code, s. 488, subsec. 5; Rev., s. 672; C.S., s. 716.)