My opinion given above, is based on a decision . I will post the citation after cheking my digest.
However, similar question arises regarding order for investigation u/s 156 (3) which says: "Any Magistrate empowered u/s 190 may order such an investigation ......". On this point a single judge of Allahabad High Court in criminal revision no 507/2007 decided on 21/11/2008, has held that:
"As would appear from sub-section (3) of Section 156 Cr.P.C., only that Magistrate can pass the order for investigation, who is empowered under section 190 Cr.P.C. to take cognizance of the offence. In view of section 7 of the Act, Addl. Chief Judicial Magistrate or any other Magistrate has no jurisdiction to take cognizance of any scheduled offence and only the special court constituted under this Act can take cognizance of any scheduled offence. Therefore, the learned lower Revisional Court is perfectly right in holding that the Addl. Chief Judicial Magistrate, Hamirpur had no jurisdiction to pass the order for investigation on the application moved by the applicant Rajjan Prasad under section 156(3) Cr.P.C.
15.This court has held in the case of Mahendrapal Jha Vs. Ram Avtar Sharma and others 2001 (42) ACC 125 that if the Magistrate has no jurisdiction to take cognizance of the offence, then, order for investigation under section 156(3) Cr.P.C. can not be passed by him and if he has passed order under section 156(3) Cr.P.C., the said order would be without jurisdiction. Although the matter of territorial jurisdiction was involved in that case, but on the basis of the principles of law laid down therein, it can very well be said that Addl. Chief Judicial Magistrate, Hamirpur could not pass order for registration of the FIR and its investigation by the police on the application moved by the applicant Rajjan Prasad under section 156(3) Cr.P.C., as the allegations made therein prima facie discloses the commission of scheduled offence under U.P. Dacoity Affected Areas Act and hence, only the Special Court, Hamirpur, which is empowered to take cognizance of the scheduled offence under this Act by virtue of section 7, could pass order for investigation under section 156(3) Cr.P.C. on that application.
16.The matter of passing the order by the Special Judge under the U.P. Dacoity Affected Areas Act on the application under section 156(3) Cr.P.C. was considered by this Court in the case of Suresh Prakash Tiwari and others Vs. State of U.P. 1994 (suppl.) ACC 121, in which order for investigation under section 156(3) Cr.P.C. was made by the Special Judge under U.P. Dacoity Affected Areas Act. The order for investigation passed by the Special Judge was upheld by this Court."