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Three assaults in Ann Arbor with investigation update

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Under Investigation

University of Michigan DPSS published this notice. Full text is preserved from the official page.

Alerts
1
Response
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Killed
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Injured
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Institution
University of Michigan
Public R1 · MI
All U-M cases →
~51,000 studentsDPSS Security Bulletin / Crime Alert
Official alert policy
Read when and how U-M says it will use U-M Emergency Alert: summarized, quoted, and analyzed.
Documented Timeline

Alert Sequence

1 message in sequence · 1 verified verbatim

Confirmed wording is transcribed character-for-character from a primary source. Use Verify this quote under each message to open that source in a new tab and compare the text yourself.

INITIAL ALERTEmail
Verified verbatim3137 chars
August 10, 2021 Security Bulletin 08/10/21: Three Assaults in Ann Arbor [Update] Update: Aug. 10, 2021 - A man suspected of committing a string of assaults against women in downtown Ann Arbor has been arraigned on several sexual assault charges on Tuesday, Aug. 10. The suspect was arraigned on two felony counts of assault with intent to commit sexual penetration and one count each of second-degree criminal sexual conduct and assault with intent to do great bodily harm. Security Bulletin: Three Assaults in Downtown Ann Arbor July 19, 2021 - The Ann Arbor Police Department is investigating three assaults against women that occurred in downtown Ann Arbor. Police believe these assaults may have been committed by the same individual. The first assault occurred at about 10 p.m., Friday, July 16, in Nickels Arcade, the covered shopping district between State and Maynard streets. A man punched a female and told her to be quiet. She immediately kicked him in the groin and started screaming causing the suspect to flee on foot. The second assault occurred at about 4 a.m., Saturday, July 17, near Catherine and North Division streets. A man jumped out near a driveway where he appeared to be hiding, punched a woman, grabbed her throat, and told her to be quiet. The woman kicked the suspect and was able to flee on foot. DPSS released a Crime Alert on July 17 regarding these two incidents. A third incident was reported at 11:14 p.m., Sunday, July 18, near W. Huron and Ashley streets. A man forced a woman into a nearby portable toilet and assaulted her. The woman was able to fight the man off, escape the portable toilet, and call out to several friends nearby. The man fled the scene as the woman’s friends called 911. Officers arrived at the scene but were unable to locate the suspect and no arrests have been made. Ann Arbor Police believe all three assaults were likely committed by the same person. In response to the incidents, Ann Arbor Police and the University of Michigan Police Department have increased patrols during the night while Ann Arbor police detectives continue their investigation. We advise residents and visitors in Ann Arbor to be extra vigilant and aware of their surroundings when walking around at night. Look assertive and trust your intuition. If a particular situation makes you feel uncomfortable or unsafe, choose an alternative. We also recommend walking with a friend or co-worker in well-lit areas and avoiding isolated areas. For University of Michigan students, faculty, and staff, be sure to check out the university’s after-hours transportation options. If you choose to utilize non-university rideshare options, be sure to know how to do so safely by reviewing our safety tips page. If you feel threatened, look for a blue light emergency phone on campus or call 911 from any phone. If you see something, say something, report suspicious behavior by calling 911. Anyone with information about any of the incidents is asked to contact Det. Sgt. Dawn Murphy at 734-794-6930, Ext. 49302 or dmurphy@a2gov.org or by calling the anonymous tip line at 734-794-6939 or emailing tips@a2gov.org.
Verify this quote
U-M DPSS Security Bulletindpss.umich.edufind archived copies
Transcribed from official DPSS web page HTML.
Message elements

How the first alert is built

To check this alert, Claude (an AI) read it in full 25 separate times, independently. Each read decided whether the message answers each of the six questions and gave a short reason. A final reviewer then weighed all 25 and wrote the plain-English verdict you see when you open a row. The score (for example 22/25) is how many reads agreed; the 25 individual reads are tucked underneath if you want to check them.

August 10, 2021 Security Bulletin 08/10/21: Three Assaults in Ann Arbor [Update] Update: Aug. 10, 2021 - A man suspected of committing a string of assaults against women in downtown Ann Arbor has been arraigned on several sexual assault charges on Tuesday, Aug. 10. The suspect was arraigned on two felony counts of assault with intent to commit sexual penetration and one count each of second-degree criminal sexual conduct and assault with intent to do great bodily harm. Security Bulletin: Three Assaults in Downtown Ann Arbor July 19, 2021 - The Ann Arbor Police Department is investigating three assaults against women that occurred in downtown Ann Arbor. Police believe these assaults may have been committed by the same individual. The first assault occurred at about 10 p.m., Friday, July 16, in Nickels Arcade, the covered shopping district between State and Maynard streets. A man punched a female and told her to be quiet. She immediately kicked him in the groin and started screaming causing the suspect to flee on foot. The second assault occurred at about 4 a.m., Saturday, July 17, near Catherine and North Division streets. A man jumped out near a driveway where he appeared to be hiding, punched a woman, grabbed her throat, and told her to be quiet. The woman kicked the suspect and was able to flee on foot. DPSS released a Crime Alert on July 17 regarding these two incidents. A third incident was reported at 11:14 p.m., Sunday, July 18, near W. Huron and Ashley streets. A man forced a woman into a nearby portable toilet and assaulted her. The woman was able to fight the man off, escape the portable toilet, and call out to several friends nearby. The man fled the scene as the woman’s friends called 911. Officers arrived at the scene but were unable to locate the suspect and no arrests have been made. Ann Arbor Police believe all three assaults were likely committed by the same person. In response to the incidents, Ann Arbor Police and the University of Michigan Police Department have increased patrols during the night while Ann Arbor police detectives continue their investigation. We advise residents and visitors in Ann Arbor to be extra vigilant and aware of their surroundings when walking around at night. Look assertive and trust your intuition. If a particular situation makes you feel uncomfortable or unsafe, choose an alternative. We also recommend walking with a friend or co-worker in well-lit areas and avoiding isolated areas. For University of Michigan students, faculty, and staff, be sure to check out the university’s after-hours transportation options. If you choose to utilize non-university rideshare options, be sure to know how to do so safely by reviewing our safety tips page. If you feel threatened, look for a blue light emergency phone on campus or call 911 from any phone. If you see something, say something, report suspicious behavior by calling 911. Anyone with information about any of the incidents is asked to contact Det. Sgt. Dawn Murphy at 734-794-6930, Ext. 49302 or dmurphy@a2gov.org or by calling the anonymous tip line at 734-794-6939 or emailing tips@a2gov.org.

  • Sourcepresent25/25

    Final assessment

    All 25 reads find s present.

    Who is sending the alert and who is responding. People act faster on a message from a clearly identifiable, credible sender, such as a named department, the police, or a branded alert system, than on an anonymous notice. A branded signature counts.

    See all 25 individual reads
    1. present: Source pass 1: DPSS Security Bulletin official branding.
    2. present: Source pass 2: DPSS Security Bulletin official branding.
    3. present: Source pass 3: DPSS Security Bulletin official branding.
    4. present: Source pass 4: DPSS Security Bulletin official branding.
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    6. present: Source pass 6: DPSS Security Bulletin official branding.
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    10. present: Source pass 10: DPSS Security Bulletin official branding.
    11. present: Source pass 11: DPSS Security Bulletin official branding.
    12. present: Source pass 12: DPSS Security Bulletin official branding.
    13. present: Source pass 13: DPSS Security Bulletin official branding.
    14. present: Source pass 14: DPSS Security Bulletin official branding.
    15. present: Source pass 15: DPSS Security Bulletin official branding.
    16. present: Source pass 16: DPSS Security Bulletin official branding.
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    18. present: Source pass 18: DPSS Security Bulletin official branding.
    19. present: Source pass 19: DPSS Security Bulletin official branding.
    20. present: Source pass 20: DPSS Security Bulletin official branding.
    21. present: Source pass 21: DPSS Security Bulletin official branding.
    22. present: Source pass 22: DPSS Security Bulletin official branding.
    23. present: Source pass 23: DPSS Security Bulletin official branding.
    24. present: Source pass 24: DPSS Security Bulletin official branding.
    25. present: Source pass 25: DPSS Security Bulletin official branding.
  • Hazardpresent25/25

    Final assessment

    All 25 reads find h present.

    What the threat actually is. A complete warning names the specific danger, such as a shooter, a fire, a tornado, or a gas leak, rather than a vague emergency, because people decide what to do based on what they are facing.

    See all 25 individual reads
    1. present: Hazard pass 1: Security Bulletin: Three Assaults in Ann Arbor Update.
    2. present: Hazard pass 2: Security Bulletin: Three Assaults in Ann Arbor Update.
    3. present: Hazard pass 3: Security Bulletin: Three Assaults in Ann Arbor Update.
    4. present: Hazard pass 4: Security Bulletin: Three Assaults in Ann Arbor Update.
    5. present: Hazard pass 5: Security Bulletin: Three Assaults in Ann Arbor Update.
    6. present: Hazard pass 6: Security Bulletin: Three Assaults in Ann Arbor Update.
    7. present: Hazard pass 7: Security Bulletin: Three Assaults in Ann Arbor Update.
    8. present: Hazard pass 8: Security Bulletin: Three Assaults in Ann Arbor Update.
    9. present: Hazard pass 9: Security Bulletin: Three Assaults in Ann Arbor Update.
    10. present: Hazard pass 10: Security Bulletin: Three Assaults in Ann Arbor Update.
    11. present: Hazard pass 11: Security Bulletin: Three Assaults in Ann Arbor Update.
    12. present: Hazard pass 12: Security Bulletin: Three Assaults in Ann Arbor Update.
    13. present: Hazard pass 13: Security Bulletin: Three Assaults in Ann Arbor Update.
    14. present: Hazard pass 14: Security Bulletin: Three Assaults in Ann Arbor Update.
    15. present: Hazard pass 15: Security Bulletin: Three Assaults in Ann Arbor Update.
    16. present: Hazard pass 16: Security Bulletin: Three Assaults in Ann Arbor Update.
    17. present: Hazard pass 17: Security Bulletin: Three Assaults in Ann Arbor Update.
    18. present: Hazard pass 18: Security Bulletin: Three Assaults in Ann Arbor Update.
    19. present: Hazard pass 19: Security Bulletin: Three Assaults in Ann Arbor Update.
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    21. present: Hazard pass 21: Security Bulletin: Three Assaults in Ann Arbor Update.
    22. present: Hazard pass 22: Security Bulletin: Three Assaults in Ann Arbor Update.
    23. present: Hazard pass 23: Security Bulletin: Three Assaults in Ann Arbor Update.
    24. present: Hazard pass 24: Security Bulletin: Three Assaults in Ann Arbor Update.
    25. present: Hazard pass 25: Security Bulletin: Three Assaults in Ann Arbor Update.
  • Locationpresent25/25

    Final assessment

    All 25 reads find l present.

    Where the threat is. Saying whether danger is in a specific building, a part of campus, or area-wide lets people judge their own proximity and choose a safe direction. Without a where, a warning is hard to act on precisely.

    See all 25 individual reads
    1. present: Location pass 1: Catherine and North Division streets.
    2. present: Location pass 2: Catherine and North Division streets.
    3. present: Location pass 3: Catherine and North Division streets.
    4. present: Location pass 4: Catherine and North Division streets.
    5. present: Location pass 5: Catherine and North Division streets.
    6. present: Location pass 6: Catherine and North Division streets.
    7. present: Location pass 7: Catherine and North Division streets.
    8. present: Location pass 8: Catherine and North Division streets.
    9. present: Location pass 9: Catherine and North Division streets.
    10. present: Location pass 10: Catherine and North Division streets.
    11. present: Location pass 11: Catherine and North Division streets.
    12. present: Location pass 12: Catherine and North Division streets.
    13. present: Location pass 13: Catherine and North Division streets.
    14. present: Location pass 14: Catherine and North Division streets.
    15. present: Location pass 15: Catherine and North Division streets.
    16. present: Location pass 16: Catherine and North Division streets.
    17. present: Location pass 17: Catherine and North Division streets.
    18. present: Location pass 18: Catherine and North Division streets.
    19. present: Location pass 19: Catherine and North Division streets.
    20. present: Location pass 20: Catherine and North Division streets.
    21. present: Location pass 21: Catherine and North Division streets.
    22. present: Location pass 22: Catherine and North Division streets.
    23. present: Location pass 23: Catherine and North Division streets.
    24. present: Location pass 24: Catherine and North Division streets.
    25. present: Location pass 25: Catherine and North Division streets.
  • Guidancepresent25/25

    Final assessment

    All 25 reads find g present.

    The protective action to take. A clear, specific instruction, such as shelter in place, evacuate, avoid the area, or run-hide-fight, drives faster and more correct protective behavior than describing the threat alone.

    See all 25 individual reads
    1. present: Guidance pass 1: safety or reporting guidance present.
    2. present: Guidance pass 2: safety or reporting guidance present.
    3. present: Guidance pass 3: safety or reporting guidance present.
    4. present: Guidance pass 4: safety or reporting guidance present.
    5. present: Guidance pass 5: safety or reporting guidance present.
    6. present: Guidance pass 6: safety or reporting guidance present.
    7. present: Guidance pass 7: safety or reporting guidance present.
    8. present: Guidance pass 8: safety or reporting guidance present.
    9. present: Guidance pass 9: safety or reporting guidance present.
    10. present: Guidance pass 10: safety or reporting guidance present.
    11. present: Guidance pass 11: safety or reporting guidance present.
    12. present: Guidance pass 12: safety or reporting guidance present.
    13. present: Guidance pass 13: safety or reporting guidance present.
    14. present: Guidance pass 14: safety or reporting guidance present.
    15. present: Guidance pass 15: safety or reporting guidance present.
    16. present: Guidance pass 16: safety or reporting guidance present.
    17. present: Guidance pass 17: safety or reporting guidance present.
    18. present: Guidance pass 18: safety or reporting guidance present.
    19. present: Guidance pass 19: safety or reporting guidance present.
    20. present: Guidance pass 20: safety or reporting guidance present.
    21. present: Guidance pass 21: safety or reporting guidance present.
    22. present: Guidance pass 22: safety or reporting guidance present.
    23. present: Guidance pass 23: safety or reporting guidance present.
    24. present: Guidance pass 24: safety or reporting guidance present.
    25. present: Guidance pass 25: safety or reporting guidance present.
  • Timepresent25/25

    Final assessment

    All 25 reads find t present.

    When the message applies. A timestamp, the word now or immediately, or a phrase like until further notice tells the reader whether the danger is current and how quickly to act.

    See all 25 individual reads
    1. present: Time pass 1: August 10, 2021.
    2. present: Time pass 2: August 10, 2021.
    3. present: Time pass 3: August 10, 2021.
    4. present: Time pass 4: August 10, 2021.
    5. present: Time pass 5: August 10, 2021.
    6. present: Time pass 6: August 10, 2021.
    7. present: Time pass 7: August 10, 2021.
    8. present: Time pass 8: August 10, 2021.
    9. present: Time pass 9: August 10, 2021.
    10. present: Time pass 10: August 10, 2021.
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    12. present: Time pass 12: August 10, 2021.
    13. present: Time pass 13: August 10, 2021.
    14. present: Time pass 14: August 10, 2021.
    15. present: Time pass 15: August 10, 2021.
    16. present: Time pass 16: August 10, 2021.
    17. present: Time pass 17: August 10, 2021.
    18. present: Time pass 18: August 10, 2021.
    19. present: Time pass 19: August 10, 2021.
    20. present: Time pass 20: August 10, 2021.
    21. present: Time pass 21: August 10, 2021.
    22. present: Time pass 22: August 10, 2021.
    23. present: Time pass 23: August 10, 2021.
    24. present: Time pass 24: August 10, 2021.
    25. present: Time pass 25: August 10, 2021.
  • Impactpresent25/25

    Final assessment

    All 25 reads find i present.

    What the hazard could do to the people in its path. Beyond naming the threat, a complete warning conveys its potential consequences or severity, such as that a tornado can level buildings or that a leak could be explosive, so recipients grasp how much danger they are in. Research on warning message content finds that a concrete impact statement helps people personalize their risk and act sooner.

    See all 25 individual reads
    1. present: Impact pass 1: realized incident outcome narrated.
    2. present: Impact pass 2: realized incident outcome narrated.
    3. present: Impact pass 3: realized incident outcome narrated.
    4. present: Impact pass 4: realized incident outcome narrated.
    5. present: Impact pass 5: realized incident outcome narrated.
    6. present: Impact pass 6: realized incident outcome narrated.
    7. present: Impact pass 7: realized incident outcome narrated.
    8. present: Impact pass 8: realized incident outcome narrated.
    9. present: Impact pass 9: realized incident outcome narrated.
    10. present: Impact pass 10: realized incident outcome narrated.
    11. present: Impact pass 11: realized incident outcome narrated.
    12. present: Impact pass 12: realized incident outcome narrated.
    13. present: Impact pass 13: realized incident outcome narrated.
    14. present: Impact pass 14: realized incident outcome narrated.
    15. present: Impact pass 15: realized incident outcome narrated.
    16. present: Impact pass 16: realized incident outcome narrated.
    17. present: Impact pass 17: realized incident outcome narrated.
    18. present: Impact pass 18: realized incident outcome narrated.
    19. present: Impact pass 19: realized incident outcome narrated.
    20. present: Impact pass 20: realized incident outcome narrated.
    21. present: Impact pass 21: realized incident outcome narrated.
    22. present: Impact pass 22: realized incident outcome narrated.
    23. present: Impact pass 23: realized incident outcome narrated.
    24. present: Impact pass 24: realized incident outcome narrated.
    25. present: Impact pass 25: realized incident outcome narrated.

Systematic AI judgments with visible reasoning, not human-validated codings.

About this analysis
Context

Background

University of Michigan DPSS Security Bulletin / Crime Alert series under dpss.umich.edu.
Analysis

Key Findings

Official DPSS notice provides incident narrative and community guidance.
Outcome
See official DPSS notice for investigation status and safety guidance.
Provenance

Sources

Every claim on this page is meant to be checkable. Open the links below (and the Verify this quote control under each confirmed alert) to read the original university, news, or archive page yourself. Hostnames are shown so you can see where you are going; archived copies survive when live pages move or disappear. See also our methodology.

  1. Official
    U-M DPSS notice
    dpss.umich.edu
    archived copy
Cite this case

Campus Alert Archive. "University of Michigan: Three assaults in Ann Arbor with investigation update." Incident of August 10, 2021. Added July 2026. https://campusalertarchive.com/case/university-of-michigan-08-10-21-three-assaults-in-ann-arbor-update-2021-08-10/

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Alert text quoted on this page remains the work of the issuing institution; the archive is a secondary source.

Tags
michigandpsssecurity-bulletinassaultUnder Investigation
Added July 2026Updated July 2026Via ingestion