Waterloo Regional Police say a 15-year-old boy was arrested in connection with the hold and secure at a Kitchener high school on Wednesday.
Police say officers were called to the school on Charles Street at around 9:40 a.m. after an online threat was reported which was potentially harmful to staff and students at Cameron Heights Collegiate Institute.
Shortly after 11 a.m., police announced on Twitter that the school had been placed under hold and secure while officers investigated.
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Within an hour, a second tweet announced that the hold and secure had been lifted.
Late Wednesday night, police announced they arrested a youth.
The 15-year-old male is facing a charge of uttering threats to cause death.