
A former martial arts instructor at a now-closed Loveland gym has been arrested on multiple felony counts of child sexual assault after two juvenile students came forward alleging abuse — with police warning that additional victims may exist.
Alexander Martinez, 29, also known as "X," is the Infinite Jiu-Jitsu Loveland Martial Arts Instructor Accused of Child Sexual Assault in Colorado who was arrested on July 3, 2026, by the Loveland Police Department. Martinez faces three counts of sexual assault on a child while in a position of trust, a Class 3 felony, along with two aggravated sex offense sentence enhancers. Court records indicate at least one of the alleged victims was under the age of 15. Infinite Jiu-Jitsu, formerly located at 329 E. 3rd St. in Loveland, is no longer in operation.
According to a Loveland Police Department news release, two juvenile students of Infinite Jiu-Jitsu reported that Martinez sexually abused them. Due to his prior role as an instructor working directly with juveniles, police say they are concerned that additional victims may not yet have come forward.
Anyone with information regarding similar allegations involving Martinez is urged to contact the Loveland Police Department tip line at 970-962-2032 or Larimer County Crime Stoppers at 970-221-6868.
The factual information above was sourced from coloradoan.com as of July 8, 2026. The attorney commentary below is not specifically about the case reported above. Attorney commentary provided is information about these types of cases in the justice system.

When a martial arts instructor is accused of sexually assaulting juvenile students, families may have significant civil legal options beyond the criminal process. Legal Herald editor Paul Amess spoke with Colorado sexual abuse attorney Dan Lipman about the civil legal avenues that may be available to families in cases involving alleged sexual abuse by a youth sports or martial arts instructor.
Paul Amess: Dan, when a martial arts instructor is accused of sexually assaulting juvenile students in their care, what civil legal options may be available to families?
Dan Lipman: Cases involving the alleged sexual assault of children by a martial arts instructor raise serious civil liability questions that extend beyond the individual accused. Families may have grounds to pursue civil claims not only against the instructor but also against the gym or organization that employed them. Youth-focused facilities have a duty to properly screen, supervise, and protect the children in their programs. When an instructor allegedly exploits that position of trust to harm students, the institution's oversight practices become directly relevant to any civil legal evaluation.
Paul Amess: In cases where a facility has since closed, does that affect a family's ability to pursue civil legal action?
Dan Lipman: The closure of a business does not necessarily extinguish civil claims against the responsible parties. Depending on the circumstances, claims may still be pursued against the individuals who owned and operated the facility and those responsible for placing the instructor in a position of access to children. Families should speak with an experienced attorney as soon as possible to understand what options may still be available to them.
Paul Amess: What would you say to a family in Colorado whose child attended a martial arts program where an instructor has been accused of sexual abuse?
Dan Lipman: Please reach out to an experienced attorney right away. Time limits apply to civil claims in Colorado, and acting early gives families the strongest possible position. An initial consultation is completely confidential and free of charge — no family should have to face this process alone.
If your child was allegedly sexually assaulted or abused by a martial arts instructor, youth sports coach, or any person in a position of authority over a minor in Colorado, you may have the right to pursue civil action and recover financial compensation. Contact The Legal Herald today to be connected with an experienced Colorado sexual abuse attorney for a free, no-obligation consultation.
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