Hello,
1) Let me quote the section for you"Any police officer making an investigation under this Chapter may, by order in writing, require the attendance before himself of any person being within the limits of his own or any adjoining station who, from the information given or otherwise, appears to be acquainted with the facts and circumstances of the case; and such person shall attend as so required:
Provided that no male person 1[“under the age of fifteen years or above the age of sixty-five years or a woman or a mentally or physically disabled person”] shall be required to attend at any place other than the place in which such male person or woman resides.
2.The State Government may, by rules made in this behalf, provide for the payment by the police officer of the reasonable expenses of every person, attending under sub-section (1) at any place other than his residence.
2)A duty has been cast upon the public to give information of certain offences as mentioned in Section 39 Cr. P.C. Section 41 of Cr.P.C gives power to police not only to arrest a person, without warrants, if he has been involved in a cognizable offence or against whom credible information has been received of his having been involved in an offence.
3) The police may take under custody the original documents of required as part of the investigation after following required procedure to take custody of it and must be presented to the court when required.