MT Security and Investigations

01/19/2026

Happy New Year! When it comes to keeping your San Diego business, home, or events safe, MT Security and Investigations has you covered with custom security solutions. Our highly trained guards, available armed or unarmed, provide a strong and visible presence to deter threats and give you peace of mind, whether you need protection for your property, neighborhood, a special event, or even private investigation services. We’re dedicated to your safety, professionalism, and keeping your information confidential. Please visit our site at sdsecurityguards.com for more information, quotes, and to view our services.

01/01/2026

From our family to yours, Happy New Year with wishes of blessings for all!

12/26/2025

Thank you for being a part of our MTSI family! We wish you the very best during this holiday season and look forward to a very successful and bright 2026!

11/27/2025

Wishing you a very Happy Thanksgiving! A special thanks to all those working this holiday to keep others safe.

11/11/2025

09/17/2025

Ready to Kickstart Your Security Career?
Join former police officer and expert trainer, Michael A. Tew, for a dynamic security guard training course! Learn the skills you need to succeed in a fun and engaging environment.

Next Class: Tuesday, September 23rd
Bring: A valid, government-issued ID

Training & Submission Fee: $150

Location: 123 Worthington St., Spring Valley, San Diego

Secure your spot today and train with the best

08/27/2025

Teamwork and training. Mike and Tim, firearm instructors, with Range Master Brian from the Coronado Police Department. Always raising the bar

07/30/2025

***OLD POST***

Tsunami Advisory is in effect for the west coast as a result of an 8.8 magnitude earthquake off the coast of Kamchatka, Russia. Tsunami waves are capable of producing strong currents and dangerous waves. Stay away from beaches and waterways until officials deem it safe to return.

07/04/2025

Happy Independence Day!

06/17/2025

In the demanding landscape of San Diego, California, peace of mind is not a luxury, it’s a necessity. That’s why discerning individuals and businesses turn to MT Security Guards and Private Investigation, our firm is built upon a bedrock of real-world experience. Our roots run deep within the very fabric of law enforcement, providing us with an unparalleled understanding of risk, procedure, and the crucial art of uncovering the truth. From safeguarding your assets to discreetly resolving sensitive matters, we bring a level of professionalism and insight that can only be forged in the crucible of active service. When you choose us, you’re not just hiring security; you’re investing in the seasoned judgment of those who have stood on the front lines.

01/09/2025

My name is Michael A. Tew, a retired police officer and the owner of MT Security & Investigations. We are looking to expand our current clientele list and would like to extend the opportunity for us to provide your community with Security to keep you safe with personally trained Security Guards.

In an unpredictable world, securing your peace of mind is paramount. At MTSI, we understand that safety is not just a necessity; it’s a fundamental right. Our dedicated team of professionals goes beyond conventional security measures to provide you with unmatched protection—whether you need unarmed guards, armed security personnel, or concealed carry experts.

We are prepared to assist the fire departments in the LA fire areas to keep the trucks and equipment safe as well as any homes and business that may had been impacted or not impacted but concerned of unwanted guest looting or causing problems. We are trained and understand the laws and procedures hot to address these people in the Palisades areas as well in the Hollywood Hills area. Including surrounding areas of concern.

Click on the link for additional information on how we can help.

We are prepared to assist the fire departments in the LA fire areas to keep the trucks and equipment safe as well as any homes and business that may had been impacted or not impacted but concerned of umwanted guest looting or causing problems. We are trained and understand the laws and procedures ho...