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Your Trusted Arizona Private Investigation Partner
Inter-State Investigative Service has been a trusted name in Arizona's investigative industry for over 30 years. Our commitment to integrity and discretion has earned us an A+ rating from the Better Business Bureau. As a licensed and insured firm since 1994, we specialize in resolving legal matters with efficiency, accuracy, and empathy. Our team of seasoned investigators undergoes continuous training to stay at the forefront of industry best practices. We offer Spanish-speaking services and operate nationwide with international capabilities in Mexico and beyond.

Our approach combines advanced investigative techniques with traditional methods to deliver thorough results. We prioritize client privacy while maintaining transparency in our investigative processes. With a focus on pre-indictment investigations, asset verification, and insurance fraud detection, we serve attorneys, insurance companies, and private citizens. Our track record demonstrates our ability to exonerate clients before indictment and provide critical evidence in complex cases.
Services
Criminal Defense Investigations Pre-Indictment Investigations Asset Verification Background Checks Insurance Fraud Detection Mexico Cross-Border Cases
Details
  • Year established: 1994
Highlights and features
  • 30+ years of investigative experience in Arizona and nationwide
  • BBB A+ rated firm with proven case dismissal success
  • Licensed investigators with specialized training in fraud detection
  • Spanish-speaking services and international investigation capabilities
  • Proven track record in pre-indictment exonerations and asset recovery
Associations and certifications
  • AZ DPS License #1002154
  • Better Business Bureau A+ Rating
What people say
Excellent work Highly impressed Professional and discreet Critical to case dismissal Exceptional investigative skills
Services
Criminal Defense Investigations
Our criminal defense investigations combine advanced forensic techniques with traditional investigative methods. We work closely with defense attorneys to uncover exculpatory evidence, interview witnesses, and challenge prosecution claims. Our investigators have specialized training in crime scene analysis and evidence preservation.
Pre-Indictment Investigations
We specialize in proactive pre-indictment investigations that often prevent charges from being filed. Our team conducts thorough background checks on accusers, locates exculpatory witnesses, and compiles evidence to present to prosecutors before formal charges are filed.
Asset Verification
Our asset verification services identify hidden assets through financial record analysis, real estate investigations, and business structure examinations. We employ former banking and mortgage industry professionals to trace complex financial transactions across multiple jurisdictions.
Insurance Fraud Detection
We help insurance companies and legal professionals detect and prove fraudulent claims through surveillance, claims history analysis, and witness interviews. Our investigators have expertise in identifying staged accidents and exaggerated injury claims.
Mexico Cross-Border Cases
Our Mexico cross-border services include locating missing persons, conducting background checks, and recovering vehicles exported to Mexico. We maintain a network of local contacts and legal experts to facilitate investigations across the border.
People
Randy Downer
Lead Investigator
With 25+ years of investigative experience, Randy specializes in complex criminal defense cases and asset recovery. He has successfully exonerated numerous clients before indictment through proactive evidence gathering.
Lacee Downer
Senior Investigator
Certified Spanish court interpreter with expertise in cross-border investigations. Handles complex insurance fraud cases and coordinates international operations in Mexico and Latin America.
Manny Rodriguez
Field Investigator
Specializes in surveillance operations and witness interviews. Certified in forensic evidence collection and frequently testifies in court as expert witness in fraud and criminal defense cases.
Questions
What types of cases do you handle?
We handle criminal defense, insurance fraud, asset verification, pre-indictment investigations, and cross-border cases in Mexico. Our services also include background checks and surveillance operations.
How quickly can you start an investigation?
We initiate investigations immediately upon retention. Case setup typically occurs within 24 hours, with field work beginning the same day in most urgent situations.
Do you work outside Arizona?
Yes, we operate nationwide with established networks in Mexico and international capabilities. Our investigators can travel to any location required for case completion.
Can you help with pre-indictment matters?
Yes, our pre-indictment investigations have successfully prevented charges in numerous cases. We work proactively with defense attorneys to gather exculpatory evidence before formal charges are filed.
Do you offer Spanish language services?
Yes, we have certified Spanish court interpreters on staff who handle document translation, witness interviews, and depositions in both English and Spanish.
Reviews (5)
South Coast Shopper
Nov 04, 2021 Report
Brandy and her team worked tirelessly to get the paperwork signed and notarized with the utmost professionalism. I would highly recommend them to anyone needing special services. They also had the best pricing for their work.
Michelle Sandoval
Jun 18, 2021 Report
Randy and his team have always provided professional and accurate information with cases. They provided excellent information and communicate with me as soon as information becomes available. I appreciate all their hard work and dedication provided by Inter-State Investigative Services. This is an office that goes above and beyond for their clients. Thank you for always being in my corner :
Review Mail
May 31, 2021 Report
We worked closely with Inter-State for a very difficult family matter a few years ago and the team did an absolutely incredible job. From start to finish, they did all the right things. We had the outcome we desired with a huge thanks to this amazing group of talented investigators.
Kenny S.
Nov 25, 2020 Report
Inter-State helped me find my deadbeat ex wife in Houston in under a week. They set even arranged to have her served with court doc through a third party process server. Despite going over my retainer, Inter-state waived the remainder of the fees. I would recommend them to anyone that needs help.
Marla Barefield-Pazzi
Jan 12, 2020 Report
We highly recommend Inter-State Investigative services. Randy Downer and his team were attentive and prompt at identifying the problem. Not knowing what to do, they guided us expertly through a very difficult situation with a quick professional manner. Their surveillance was efficient, stealthy and successful in capturing the images we needed to present in court. They obtained documents, conducted interviews, and summarized the findings. Randy and his staff eased our anxiousness with empathy and efficiency in responding to all of our calls and emails. The work and the evidence Randy's team produced made the difference in our case. We will be eternally grateful to Inter-State Investigative Services.