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Mar 14, 1:11 PM EDT

Arrest made after threat closes Pewaukee schools

PEWAUKEE, Wis. (AP) -- Waukesha County sheriff's officials say a student has been arrested for making a threat that closed Pewaukee schools.

The school district decided to cancel classes Wednesday following a threat that was posted on social media Tuesday night. Sheriff's officials don't believe anyone else was involved. Classes were to resume Thursday.

Meanwhile, Milwaukee police made an arrest at Pulaski High School about 8:30 a.m. Wednesday after they received a report of a subject with a gun. Police say one male was taken into custody, but no weapons were found.

And at Mukwonago High School south of Milwaukee, a walkout by students who planned to participate in a nationwide movement against gun violence was canceled because of a threat.

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