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Rosemarie Rose Proos

Case from Royal-oak, MI dated Nov 14, 1991

Victim Details

Name

Rosemarie Rose Proos

Gender

Female

City

Royal-oak

State

MI

Date Of Death

1991-11-14

Age At Death

33

First Name

Rosemarie

Last Name

Rose Proos

Last Updated

07/02/2026

Case Description

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On a tragic Thursday morning, November 14, 1991, the community of Royal Oak, Michigan, was shaken by a horrifying act of violence that claimed the life of Rosemarie Rose Proos, a 33-year-old female postal supervisor. The day began like any other at the United States Post Office on West 2nd Street, but it would soon descend into chaos and bloodshed.

A former postal worker, 31-year-old Thomas McIlvane, who had been terminated from his position for insubordination, returned to his old workpl ...

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Links to Additional Sources (3)

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Rosemarie “Rose” Cusimano Proos (1958-1991) -...

Daily Tribune: Royal Oak Post Office shooting 30 years later

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Forum Posts (3)

I've been thinking a lot about the voicemail threats McIlvane left before the tragedy. It's so distu... ...Read More
11/28/2024

Hey everyone,
I came across some information about Rose Proos, and I just can't stop thinking abo... ...Read More
07/15/2024

Has anyone here looked into the aftermath of the Royal Oak Post Office community following this trag... ...Read More
10/19/2023

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