Section 21, The Criminal Procedure Act, 2024

(1) A Police Officer or an officer of the Court to whom a Summons is delivered for service shall serve it upon the person to whom it is directed by delivering it to him personally or by leaving it with some other person for him at his last known or usual place of residence. (2) Where service under subsection (1) cannot, by the exercise of due diligence be effected, the serving Police Officer or an officer of the Court shall affix the summons to some conspicuous part of the last known or usual place of residence of the person summoned, and the summons shall be deemed to have been duly served.