In the quiet town of Wilbraham, Massachusetts, the life of Sima Setian Pariseau, a 56-year-old White/Caucasian woman, was tragically cut short in a devastating act of violence. On the morning of Tuesday, June 18, 2024, police were called to her home on Main Street to conduct a welfare check after a person known to the family expressed concern. Upon arrival, officers made a grim discovery that would send shockwaves through the community.
Inside the residence, authorities found the bodies of Sima and her 27-year-old son, Dylan Pariseau. Both had suffered multiple gunshot wounds and were located in the basement of their home. On the first floor, law enforcement found the body of Peter Donaldson, Sima's 56-year-old domestic partner. Investigators concluded that Donaldson had shot and killed both Sima and her son before taking his own life. While no definitive motive was immediately released, it was reported that Donaldson had been struggling with depression in the months leading up to the murder-suicide.
The investigation into the deaths of Sima and Dylan Pariseau did not lead to any arrests as the sole suspect was deceased. The incident was ruled a murder-suicide by authorities. The community was left to mourn the loss of a woman described as a beacon of light, known for her warm smile, compassion, and leadership. Sima was deeply involved in her community, serving as the Vice Chair of the Board of Trustees for the Saint Gregory Armenian Apostolic Church and volunteering as a Court Appointed Special Advocate for children in the foster care system. She was a dedicated mother and a respected medical coding specialist, remembered for her unwavering support for her family, friends, and community.
