Theresa H. "Terri" Day, aged 51, was tragically found deceased in her Manor, Pennsylvania home on December 22, 2024. Authorities determined that her death resulted from a gunshot wound inflicted by her husband, Jeffrey Day, aged 62, who subsequently took his own life. The incident has been classified as a murder-suicide by local law enforcement and the Westmoreland County Coroner's Office.
The couple's bodies were discovered around 6:20 p.m. by a family member at their residence on Frederick Drive. Theresa was pronounced dead at the scene, having suffered a fatal gunshot wound, while Jeffrey's death was attributed to a self-inflicted gunshot wound. The Westmoreland County District Attorney's Office, along with Manor Borough Police, is overseeing the investigation.
Theresa Day was a dedicated nurse with a career spanning several esteemed medical institutions. She began her profession at Monsour Medical Center, later serving as a Neuro ICU nurse at Shadyside Hospital and in the ICU at Westmoreland Hospital. Most recently, she held the position of critical care nurse and nurse manager of hospital operations at AHN Forbes Regional Hospital, where she was highly regarded by her colleagues. Her commitment to nursing earned her numerous accolades, including the Beacon, Cameo Caring, Legacy, and Daisy Nurse Leader awards.
In addition to her professional achievements, Theresa was a loving mother to her two sons, Anthony M. Day and William J. "Billy" Day. She is also survived by her parents, William and Henrietta Lang, her sister Christine McCarthy, her brother Joseph Lang, and several nieces and nephews. Her passing has left a profound void in the lives of her family, friends, and the medical community she served so diligently.
The tragic circumstances surrounding Theresa and Jeffrey Day's deaths have deeply affected the Manor community. As the investigation continues, authorities have not indicated any prior history of domestic disturbances at their residence. The focus remains on providing support to the grieving family and understanding the factors leading up to this heartbreaking event.
