A state investigation into Grosse Ile police was active on Oct. 7, 2026, after officer Susan Dalpiaz filed a lawsuit alleging retaliation and interference.
A letter from Wayne County Prosecutor Kym Worthy to resident Kyle de Bosse confirmed that Michigan State Police were investigating matters involving the Grosse Ile Police Department as of Oct. 7, 2026. The information was reviewed by Reuters.
Worthy declined to provide further details while the inquiry remains active. The prosecutor's office has confirmed the investigation's existence, not its substance.
The inquiry follows a lawsuit filed by Grosse Ile police officer Susan Dalpiaz. She alleges that the department improperly demoted her after she reported suspected interference by Scott Longton, chair of the Grosse Ile Police Commission, in a home-invasion investigation. Those claims remain part of the litigation and have not become court findings.
The lawsuit alleges that $350 was stolen from a home. It also alleges that Longton tried to influence the investigation in favor of a friend of his son.
The filing further alleges that Longton threatened a minor witness by telephone through the witness's father. The father did not know that he was a federal agent and had preserved recordings of the calls. Those details remain allegations, not adjudicated facts.
Worthy said she could not discuss the matter further because the investigation is active. She said Michigan State Police should be allowed to complete the necessary work.
Grosse Ile Township Manager Derek Thiel declined to comment, citing a policy against discussing pending litigation. Public notices and official government information are available through the Grosse Ile Township website.
No public finding identified in the supplied material shows that misconduct occurred. The record does not establish whether any officer, commissioner or other official will face criminal charges or internal discipline. It also does not identify a completion date for the Michigan State Police inquiry.
The case is separate from the City of Farmington and Farmington Public Schools. No connection to either local institution has been identified.
For Farmington Voice readers, that distinction matters. An investigation involving another Michigan municipality should not be treated as a local Farmington proceeding or as evidence of wrongdoing by any Farmington official.
The oversight issue involves the relationship between the local police department and its civilian commission. Township administration is another part of that structure, but Oakland County administration and the City of Farmington have no identified role in this matter.
The State of Michigan, including Michigan State Police, is conducting the reported investigative work. The Wayne County Prosecutor's Office has confirmed that the inquiry exists without disclosing its substance.
A separate example of how limited public information can affect a local report appears in this earlier breakdown. It is unrelated to the Grosse Ile investigation.
The available record supports reporting on the lawsuit and the active inquiry. Officials' limited statements are also documented. It does not support a conclusion that corruption occurred.
As of Oct. 7, 2026, the investigation was active. Worthy would not discuss details, and Thiel declined comment. The supplied material identifies no arrests or charges. It identifies no disciplinary actions or investigative findings.
