How do you file an affidavit for non prosecution in pa? My mom's boyfriend and I got into a verbal altercation he picked.And I am 18 years of age or older. How do i go about filling out an affidavit of non prosecution? Is there a form i can fill out or a certain wording required? An affidavit of nonprosecution is a sworn document in which the plaintiff expresses their desire not to prosecute the case or participate in the prosecution. The prosecutors has to prove your supposed guilt. Explore the affidavit of nonprosecution, its legal implications, and potential future developments in criminal cases. Finding yourself entangled in legal proceedings can be daunting. 3. Complete the affidavit of non-military page that follows the Statement of Claim form for each individual defendant.