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‘Unsubstantiated' threat caused ‘secure' protocol at some Grapevine-Colleyville schools

‘Unsubstantiated' threat caused ‘secure' protocol at some Grapevine-Colleyville schools
Photo: NBC DFW · view original

Colleyville Heritage High School investigated a threat called into the school on Friday, which prompted multiple schools in Grapevine-Colleyville ISD to be placed on a "secure" protocol. According to the school district, Colleyville Heritage High School, along with Heritage Elementary, Heritage Midd

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