What is the provision of anticipatory bail under the Code of Criminal

The case on 03/04/2023 first petition 174 CRPC suspect : 1 person "Praveen Kumar" and Medical certificate report nature death with small head injury and suicide note: anyone not responsible of my death note, then second petition 25/06/2023 On 304b case alteration 174, suspect: 3 persons A1 Praveen, A2 Father, A3 mother sister and enquiry under process and if case dismissed on court