Motive 'combination of factors' in Wisconsin school shooting, police say - BBC.com
- Motive 'combination of factors' in Wisconsin school shooting, police say BBC.com
- What we know about the Madison, Wisconsin, school shooter CNN
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- Madison, Wis., residents hold candlelight vigil as police search for motive in school shooting: Here’s what we know so far Yahoo! Voices
- Madison school shooting underlines how female school shooters are statistically rare Milwaukee Journal Sentinel