Report a crime or concern. If you know or suspect that a crime is being committed you can report it to the City.In this post, we'll break down what happens after you've been charged with assault in Philadelphia. 1. Immediate Arrest and Booking. If you would like to report a past sexual assault, contact the Philadelphia Police Department Special Victims Unit at 215-685-3251. Submit an Anonymous Tip ; First Name. We can advise you how to file a complaint against the officer who assaulted you, and even refer you to another attorney who specializes in this area. Fill out this form if you wish to file a formal and official complaint against police with the Philadelphia Police Department. Your first step should always be to contact an experienced Pennsylvania criminal defense attorney who regularly handles assault cases. Simple assault is a serious charge that deserves an experienced attorney with proven experience.