And in that Rules, it says that:
Sec. 11.Xxx Provided, however, that in Metropolitan Manila and in Chartered Cities. such cases shall be commenced only by information, except when the offense cannot be prosecuted de oficio.
(b) If commenced by information. — When the case is commenced by information, or is not dismissed pursuant to the next preceding paragraph, the court shall issue an order which, together with copies of the affidavits and other evidence submitted by the prosecution, shall require the accused to submit his counter-affidavit and the affidavits of his witnesses as well as any evidence in his behalf, serving copies thereof on the complainant or prosecutor not later than ten (10) days from receipt of said order. The prosecution may file reply affidavits within ten (10) days after receipt of the counter-affidavits of the defense.
So my question is, why is the prosecutor still going to do a preliminary investigation in the case I filed (BP 22), when the MTC would also do the same?