If you have a complaint against a police officer or sheriff's deputy, you should first direct your complaint to the local law enforcement agency. Print and mail completed form to: Office of Inspector General 799 G Street, Room 747Citizen Complaint or Commendation Form. To contact us, please take the time to fill out the information below or contact us immediately at (510) 9295400. File an online police report for a qualifying incident. You have the right to make a complaint against law enforcement if your rights have been violated under California Law. This page contains information for submitting anonymous tips on crime in our community. Police officers,; sheriffs, and; officers at law enforcement agencies like the DEA or ICE. 2. What is unlawful detention? As someone who has successfully sued the police I believe I can answer this.