If the court of common pleas determines that a witness before a grand jury is required to answer an interrogatory and such witness persists in his refusal, he shall be brought before the court, which shall proceed in a like manner as if such witness had been interrogated and refused to answer in open court.
Contempt proceedings against witness refusing to testify
Ohio Rev. Code Ann. § 2939.15, under Chapter 2939 | Grand Juries.
Ohio Rev. Code Ann. § 2939.15