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Number of sex offenders living in Rochester remains at 9 in April

Published 06/20/26

There was no change in the number of registered sex offenders living in Rochester in April compared to the previous month, according to the Minnesota Public Registrant Search.

As of April, nine sex offenders were living in the city.

The Registry shows none of these sex offenders are sexual predators.

In Minnesota, people convicted of sex-related crimes are required to register as predatory offenders. The registration period usually lasts 10 years from sentencing, release, or the end of supervision, but in serious cases, such as repeat offenses or first-degree criminal sexual conduct, it can extend to lifetime registration.

Minnesota spends over $100 million annually on its Sex Offense Civil Commitment (SOCC) program, designed to prevent sex offender recidivism, according to a study by the Sex Offense Litigation and Policy Resource Center.

As of August 2024, there were 18,877 registered sex offenders living in Minnesota. This translates to roughly 331 offenders per 100,000 residents.

Frequently updated information about sex offenders in Minnesota can be found online here.

Registered Sex Offenders in Rochester as of April
OffenderCrimeCrime description
Alexander Mark MartinelliCriminal sexual conduct in the third degree (3 counts)Alexander Martinelli at age 19 engaged in multiple incidents of sexual contact against separate, known male teens. Martinelli used his established relationships of trust to attain and exploit unmonitored contact with the victims'. He used manipulation and coercion in his efforts to maintain control.
James Dennis FergusonCriminal sexual conduct in the second degreeJames Ferguson engaged in sexual contact against a known male child. Contact included penetration. Ferguson used his established relationship of trust to attain and exploit unmonitored access with the victim. He used manipulation and coercion in his efforts to maintain control.
Jeremy James FrankenCriminal sexual conduct in the first degreeIn 2003, Jeremy Franken engaged in multiple incidents of sexual contact against a known female child over a period of years. Contact included penetration. Franken used his significant relationship of trust to attain and exploit unmonitored contact with the victim. He used manipulation and coercion in his efforts to maintain control.
Matthew Ryan JudyCriminal sexual conduct in the third degreeMatthew Judy engaged in sexual contact against an unknown female teenager. Contact included penetration. Judy used coercion to gain access and force to maintain control.
Michael James CostaCriminal sexual conduct in the second degree, criminal sexual conduct in the fourth degreein 2011 Michael Costa engaged in sexual contact against a known female child. Contact included penetration. Costa accessed the victim through his relationship of trust. He used the victim's confusion and naiveite in an effort to maintain control. In 2003 Costa engaged in sexual contact against a known female teen. Contact included touch. Costa accessed the victim while she was on run-away status allowing her into his residence. He used manipulation and coercion in order to maintain control.
Norman A. EdstromCriminal sexual conduct in the first degreeFrom 1972-1990, Norman Edstrom engaged in multiple incidents of sexual contact against unknown female and male victims ranging from children and teenaged to adult. He accessed the majority of his victims by offering rides while they waited at bus stops or were hitchhiking. Once in his car, Edstrom would use threats of violence, force and a weapon to maintain control.
Robert MartinezCriminal sexual conduct in the fourth degreeRobert Martinez engaged in sexual contact against a known female teen. Contact included penetration. Martinez accessed the victim while socializing with her and others using interest and friendliness to coerce her to another location. Once isolated Martinez used force and threats of a weapon to maintain control.
Scott Anthony ThorpeCriminal sexual conduct in the first degree, criminal sexual conduct in the second degree Scott Thorpe has a history of sexual contact against known female children. Contact included penetration. Thorpe used his relationship of trust to attain and exploit unmonitored access.
William Burton-James SolbrigCriminal sexual conduct in the second degreeWilliam Solbrig engaged in sexual contact against a known female child. Contact included touch. Solbrig accessed the victim as they were together attending the same church. He used the victim's confusion and naivete in an effort to maintain control.

Information in this article was obtained from the Minnesota Public Registrant Search. The source data can be found here.

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