The CrPC 1973 was replaced by the BNSS 2023 (in force 2024-07-01); no verified section mapping on file for Section 139 — confirm the corresponding provision (savings: Section 531, BNSS 2023).
The Magistrate may, for the purposes of an inquiry under Section 137 or Section 138-- (a) direct a local investigation to be made by such person as he thinks fit; or (b) summon and examine an expert.