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U-M

Home invasion and sexual assault at 500 block Lawrence St., Ann Arbor

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Under Investigation

University of Michigan DPSS published Crime Alert concerning this incident. 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 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 verbatim1507 chars
Crime Alert 2021-3: Home Invasion & Sexual Assault Summary: The Ann Arbor Police Department (AAPD) is actively investigating a home invasion and sexual assault that occurred in an off-campus neighborhood. The suspect entered through an unlocked exterior door in the bedroom while the victim was in bed sleeping. He got into the victim’s bed and started to touch her inappropriately. The victim screamed, and the suspect fled from the area in an unknown direction. If you have any information, please contact the Ann Arbor Police department, Detective Steven Van Alstine at 734-794-6930 ext 49317 or the Ann Arbor Police Department Tip Line (734) 794-6939 or tips@a2gov.org or the Division of Public Safety & Security at (734) 763-1131 Remember: - Keep all exterior doors and windows locked - Keep exterior lights on at night - If you see something, say something. Report suspicious behavior. Call 911 - Confidential Tip Line 1-800-863-1355 Sexual assault is any sexual activity that occurs in the absence of consent. Responsibility lies with the perpetrator, not the survivor – no one deserves, asks for, or provokes sexual assault. The University of Michigan Police Department has a Special Victims Unit that strives to provide a safe, caring environment where victims are empowered to take action. If you or someone you know has experienced sexual assault, we encourage you to report it to law enforcement. For status updates to this alert, visit our website and follow us on Twitter and Facebook.
Verify this quote
U-M DPSS Crime Alertdpss.umich.edufind archived copies
Transcribed from official DPSS crime-alert web page HTML.
2026-09-21 second deep audit P2 chrome R1/ruling #6: DPSS Alert ID/Agency/Issued/Date/Location/Offense field block is archive-page template. Recaptured title + rich-text notice body. Paired demote+correct. Cap-exempt.
Message elements

How the first alert is built

To check this alert, Claude Opus 5.5 (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.

Crime Alert 2021-3: Home Invasion & Sexual Assault Summary: The Ann Arbor Police Department (AAPD) is actively investigating a home invasion and sexual assault that occurred in an off-campus neighborhood. The suspect entered through an unlocked exterior door in the bedroom while the victim was in bed sleeping. He got into the victim’s bed and started to touch her inappropriately. The victim screamed, and the suspect fled from the area in an unknown direction. If you have any information, please contact the Ann Arbor Police department, Detective Steven Van Alstine at 734-794-6930 ext 49317 or the Ann Arbor Police Department Tip Line (734) 794-6939 or tips@a2gov.org or the Division of Public Safety & Security at (734) 763-1131 Remember: - Keep all exterior doors and windows locked - Keep exterior lights on at night - If you see something, say something. Report suspicious behavior. Call 911 - Confidential Tip Line 1-800-863-1355 Sexual assault is any sexual activity that occurs in the absence of consent. Responsibility lies with the perpetrator, not the survivor – no one deserves, asks for, or provokes sexual assault. The University of Michigan Police Department has a Special Victims Unit that strives to provide a safe, caring environment where victims are empowered to take action. If you or someone you know has experienced sexual assault, we encourage you to report it to law enforcement. For status updates to this alert, visit our website and follow us on Twitter and Facebook.

  • Sourcepresent25/25

    Final assessment

    All 25 reads agree the source is present: the alert names the Ann Arbor Police Department and the Division of Public Safety & Security.

    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: It names the Ann Arbor Police Department.
    2. present: 'Crime Alert' and the Ann Arbor Police Department are named.
    3. present: It names the Ann Arbor Police Department and DPSS.
    4. present: Ann Arbor Police and DPSS.
    5. present: It names the Ann Arbor Police Department and the Division of Public Safety & Security.
    6. present: The Ann Arbor Police Department and DPSS are named.
    7. present: Cites the Ann Arbor Police Department and DPSS.
    8. present: It names the Ann Arbor Police Department and Division of Public Safety and Security.
    9. present: It names the Ann Arbor Police Department and DPSS.
    10. present: It names 'The Ann Arbor Police Department (AAPD)' and DPSS.
    11. present: It is a numbered Crime Alert naming AAPD and DPSS.
    12. present: The Ann Arbor Police Department and DPSS are named.
    13. present: The Ann Arbor Police Department and DPSS are named.
    14. present: It names the Ann Arbor Police Department and Division of Public Safety and Security.
    15. present: Ann Arbor Police and DPSS are named.
    16. present: Ann Arbor Police and DPSS are named.
    17. present: It names the Ann Arbor Police Department and DPSS.
    18. present: The Ann Arbor Police Department and DPSS are named.
    19. present: Names the Ann Arbor Police Department and DPSS.
    20. present: Ann Arbor Police Department and DPSS.
    21. present: AAPD and DPSS are named.
    22. present: It names the Ann Arbor Police Department and DPSS.
    23. present: It names AAPD and the Division of Public Safety & Security.
    24. present: It names the Ann Arbor Police Department and Division of Public Safety and Security.
    25. present: It is 'Crime Alert 2021-3' and says 'The Ann Arbor Police Department (AAPD) is actively investigating'.
  • Hazardpresent25/25

    Final assessment

    Unanimous: the title names a specific hazard, "Home Invasion & Sexual Assault".

    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: It names 'Home Invasion & Sexual Assault'.
    2. present: It names a home invasion and sexual assault.
    3. present: It names a home invasion and sexual assault.
    4. present: Home invasion and sexual assault.
    5. present: It names a 'Home Invasion & Sexual Assault'.
    6. present: It names a "Home Invasion & Sexual Assault".
    7. present: Names a home invasion and sexual assault.
    8. present: It names a home invasion and sexual assault.
    9. present: It names "Home Invasion & Sexual Assault".
    10. present: It names 'Home Invasion & Sexual Assault'.
    11. present: It names "Home Invasion & Sexual Assault".
    12. present: It names a home invasion and sexual assault.
    13. present: It names home invasion and sexual assault.
    14. present: It names a home invasion and sexual assault.
    15. present: Names 'Home Invasion & Sexual Assault'.
    16. present: It names "Home Invasion & Sexual Assault".
    17. present: It names home invasion and sexual assault.
    18. present: It names a home invasion and sexual assault.
    19. present: Names 'Home Invasion & Sexual Assault'.
    20. present: Home invasion and sexual assault.
    21. present: It names a home invasion and sexual assault.
    22. present: It names 'Home Invasion & Sexual Assault'.
    23. present: It names 'Home Invasion & Sexual Assault'.
    24. present: It names a home invasion and sexual assault.
    25. present: It names a 'Home Invasion & Sexual Assault', a specific crime threat.
  • Locationpresent21/25

    Final assessment

    Present by a 21 to 4 majority: "an off-campus neighborhood" counts as a general area. A few reads held that no identifiable place is named.

    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: It says 'an off-campus neighborhood', a general area.
    2. present: It says 'an off-campus neighborhood'.
    3. present: It places it in 'an off-campus neighborhood'.
    4. present: 'An off-campus neighborhood'.
    5. present: It says it 'occurred in an off-campus neighborhood'.
    6. present: It says it occurred "in an off-campus neighborhood".
    7. absent: Only 'an off-campus neighborhood', no identifiable place.
    8. present: It says "an off-campus neighborhood", a general area.
    9. absent: It says only "an off-campus neighborhood", with no identifiable place.
    10. present: It says 'an off-campus neighborhood', a general area.
    11. present: It says "an off-campus neighborhood", a general area.
    12. present: It gives "an off-campus neighborhood" as the area.
    13. present: It says an off-campus neighborhood.
    14. present: It places it in an off-campus neighborhood.
    15. present: 'an off-campus neighborhood'.
    16. present: It gives "an off-campus neighborhood".
    17. present: It says 'an off-campus neighborhood'.
    18. present: It places it in 'an off-campus neighborhood'.
    19. present: 'an off-campus neighborhood'.
    20. absent: Only "an off-campus neighborhood", no identifiable place.
    21. absent: It says only 'an off-campus neighborhood', no specific place.
    22. present: It says 'an off-campus neighborhood'.
    23. present: It places the incident in 'an off-campus neighborhood'.
    24. present: It places it in an off-campus neighborhood.
    25. present: It places the incident 'in an off-campus neighborhood', a general area rather than an exact address.
  • Guidancepresent25/25

    Final assessment

    Unanimous: readers are told to "Keep all exterior doors and windows locked", keep lights on, and call 911, which are protective actions.

    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: It advises keeping doors and windows locked and calling 911.
    2. present: It advises keeping exterior doors locked.
    3. present: It advises keeping doors locked and calling 911.
    4. present: Keep doors locked, call 911.
    5. present: It advises 'Keep all exterior doors and windows locked'.
    6. present: It advises keeping exterior doors and windows locked.
    7. present: Tips say keep doors and windows locked.
    8. present: It advises keeping exterior doors and windows locked.
    9. present: It advises keeping doors and windows locked.
    10. present: It advises 'Keep all exterior doors and windows locked'.
    11. present: It advises keeping doors and windows locked.
    12. present: It advises keeping doors and windows locked.
    13. present: It advises keeping doors and windows locked.
    14. present: It advises keeping exterior doors and windows locked.
    15. present: Advises keeping exterior doors and windows locked.
    16. present: It advises keeping doors and windows locked.
    17. present: It advises keeping exterior doors and windows locked.
    18. present: It advises keeping doors and windows locked and reporting suspicious behavior.
    19. present: Advises keeping exterior doors and windows locked.
    20. present: Keep exterior doors locked, call 911.
    21. present: It advises keeping doors and windows locked.
    22. present: It advises keeping doors and windows locked and calling 911.
    23. present: It advises keeping exterior doors locked and calling 911.
    24. present: It advises keeping doors and windows locked.
    25. present: It advises 'Keep all exterior doors and windows locked' and 'Call 911'.
  • Timeabsent0/25

    Final assessment

    All 25 reads agree timing is absent: no clock time, date, or recency cue appears anywhere in the alert.

    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. absent: No time, date, or recency cue appears.
    2. absent: No time or date appears.
    3. absent: No date, time, or recency cue is given.
    4. absent: No time or date appears.
    5. absent: No date, clock time, or recency cue appears.
    6. absent: No clock time, date, or recency cue appears.
    7. absent: No time or date appears.
    8. absent: No date, clock time, or recency cue appears.
    9. absent: No date, time, or recency cue appears.
    10. absent: No date, clock time, or recency cue is given.
    11. absent: No time, date, or recency cue appears.
    12. absent: No time, date, or recency cue is given.
    13. absent: No time, date, or recency cue appears.
    14. absent: No time, date, or recency cue appears.
    15. absent: No time or date is given.
    16. absent: No time, date, or recency cue appears.
    17. absent: No time or date is given.
    18. absent: No time, date, or recency cue is given.
    19. absent: No clock time, date, or recency cue.
    20. absent: No time or date.
    21. absent: No time, date, or recency cue appears.
    22. absent: No date, time, or recency cue is given.
    23. absent: No date, time, or recency cue appears.
    24. absent: No time, date, or recency cue appears.
    25. absent: No date, clock time, or recency cue is given for when the assault occurred.
  • Impactabsent9/25

    Final assessment

    Absent by a 16 to 9 majority: the alert describes the crime but states no consequence or severity. Dissenters counted the description of a sleeping victim being touched as conveying harm.

    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. absent: No stated consequence or severity beyond describing the crime.
    2. present: It describes the victim being touched in bed, conveying harm.
    3. absent: No consequence or severity is stated.
    4. present: Describes the suspect touching the sleeping victim, stated harm.
    5. absent: No stated consequence or severity is given.
    6. present: It describes the suspect physically touching a sleeping victim, conveying harm to a person.
    7. absent: No severity statement is made.
    8. absent: It describes the act but states no injury or severity.
    9. absent: It describes the act but states no further consequence or severity.
    10. absent: No consequence or severity language is conveyed.
    11. present: It describes a sleeping victim being sexually assaulted in her bed, conveying serious harm.
    12. present: It describes the suspect touching a sleeping victim, a stated harm to a person.
    13. absent: It names the assault but states no further consequence or severity.
    14. absent: No consequence or severity is stated.
    15. absent: No consequence or severity statement is made.
    16. absent: No consequence or severity is stated.
    17. present: It describes the suspect getting into bed and touching the victim, a stated harm.
    18. present: It describes the suspect entering the bed and touching the victim, conveying harm.
    19. absent: No severity or consequence stated.
    20. absent: No consequence beyond naming the crime.
    21. absent: No consequence or severity statement beyond the crime itself.
    22. present: It describes the intruder getting into a sleeping victim's bed and touching her.
    23. present: It describes the suspect entering the bedroom and touching the victim, a sexual assault on a person.
    24. absent: It describes the assault itself but conveys no injury, weapon, or severity statement.
    25. absent: It describes the assault itself but adds no statement of injury, weapon, or severity beyond naming the crime.

Coded by Claude Opus 5.5

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

About this analysis
Context

Background

University of Michigan DPSS Crime Alert series under dpss.umich.edu news-and-alerts.
Analysis

Key Findings

Official DPSS Crime Alert provides incident summary, location, and offense type.
Outcome
See official DPSS Crime Alert 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 Crime Alert
    dpss.umich.edu
    archived copy
Cite this case

Campus Alert Archive. "University of Michigan: Home invasion and sexual assault at 500 block Lawrence St., Ann Arbor." Incident of September 24, 2021. Added July 2026; last updated September 2026. https://campusalertarchive.com/case/university-of-michigan-crime-alert-2021-3-home-invasion-and-sexual-assault-2021-09-24/

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

Tags
michigandpsscrime-alertsexual-assaultUnder Investigation
Added July 2026Updated September 2026Via ingestion