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Story summary
- On December 30, 2025, Mercer Island Police Department officers responded to a welfare check around 10:45 a.m. and found a mother in her late 70s and her son in his mid-40s dead from gunshot wounds in their home, an apparent murder-suicide.
- A gun was recovered; authorities say no suspects are outstanding.
- Investigators with the King County Prosecutor's Office seek warrants and review motives.
