The Upper Darby School District is installing a new weapons-detection system at three schools. The move comes after two gun-related incidents at Upper Darby High School earlier this school year. KYW Newsradio's Justin Udo reports.

<p>The Upper Darby School District is installing a new weapons-detection system at three schools. The move comes after two gun-related incidents at Upper Darby High School earlier this school year. KYW Newsradio's Justin Udo reports.</p>

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