Waltham police identify source of school threat that prompted added security
Marisa Mendonsa, superintendent of Waltham Public Schools, wrote in a letter to families that the source of the threat was a ...
Increased police presence at Waltham middle school after Snapchat shooting threat
Waltham Public Schools Superintendent Marisa Mendonsa confirmed Sunday that administrators were made aware of multiple ...
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Backpacks prohibited at Waltham school Monday after online shooting threat
Superintendent Marisa Mendonsa told Boston 25 News a threat about a potential school shooting surfaced on Snapchat over the weekend. Mendonsa says backpacks brought Monday will be searched and a ...