Firm Overview

Criminal Defense Law Firm

Rosengren, Kohlmeyer & Hagen Law Office Chtd. is a criminal defense law firm that practices throughout southern Minnesota. The team of attorneys at Roko Law have over 40 years combined criminal law experience, helping individuals from the Mankato, New Ulm, St. Peter, St. James and communities all throughout the southern part of the state.

We’ve handled cases from minor consumption and DWI charges all the way to 1st degree murder. We’ve appeared throughout Minnesota’s court system including the trial courts, the court of appeals and the Minnesota Supreme Court, as well as the 8th circuit court of appeals and the United States Supreme Court.

Our experience, coupled with numerous accolades, awards and achievements, has let us live up to our motto: We Solve Problems

Here are some of our more recent results:

  • DWI, Nicollet County – Dismissed
  • Attempted 1st Degree Murder – Dismissed
  • DWI – Dismissed
  • Sale of cocaine (1st Degree): Reduced to 60 days jail
  • Domestic Assault – Not Guilty
  • Domestic Assault – Reduced to disorderly conduct
  • Felony Theft – Dismissed
  • 5th Degree Assault – Reduced to disorderly conduct
  • DWI – Reduced to careless driving
  • 2nd degree assault – Dismissed

We Solve Problems | (507) 625-5000


Rosengren, Kohlmeyer & Hagen Law Office Chtd. 

150 St. Andrews Court, Suite 110

Mankato, Minnesosta 56001

located behind Degrood’s and Floor to Ceiling

Open 8 a.m. to 5 p.m.

Call our office or e-mail us to schedule an initial consultation with one of our lawyers.

  • Hire Them Without Question!

    Professional, understanding and caring. Our case was long and drawn out, but from staff to the attorneys, we were always treated as if we were at “the top”, of their case load. Any questions we had were addressed thoroughly and promptly. We will be back. Hire them without question!

  • Outstanding Lawyer

    An outstanding lawyer, well worth the money, if you want to win, call Chris, he’ll fight for you all the way. He wont sell you out like some lawyers will.

  • damn good

    Attorney Hagen turned my career ending DUI charge into a careless driving. As he predicted the most likely outcome from the free consultation. Incredible lawyer and man, I cannot thank or recommend him enough.

  • Dismissed DWI

    Tom saved my career! I was facing a DWI that had the potential to ruin my career. Tom put together a great case and had it dismissed! I didn't even know that was possible. I still have a my job and attribute that to Tom's hard work on my case.

  • Great Lawyer

    I wanted a "Mr nice guy / ruthless" Lawyer when I contacted Jason Kohlmeyer and Tom Hagen. He had helped members of my family in the past and came highly recommended.My life has never been simpler and I would recommend these Gentlemen (and there amazingly helpful staff) to anyone!!

  • Thank You!

    When I received a DWI, I instantly called Rosengren Kohlmeyer law office. I was set up with Mr. Hagen, who was friendly and reassured me that he would do his best to help me in this situation. Mr. Hagen was able to lower my sentencing to a Careless Driving.

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