A 15-year-old female student was identified by police Monday as the assailant in a school shooting in the US state of Wisconsin that left three people dead, including the shooter.

“The shooter has now been identified as (a) 15-year-old,” police chief Shon Barnes of the state capital Madison told reporters.

“She was a student at the school, and evidence suggests she died from a self-inflicted gunshot wound,” he added.

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