The Boulder County Sheriff's Office says the first threat was found written on a wall inside the school Monday afternoon.
Rich Brough, a commander with the Sheriff's department, says a hit list of around 30 names was found by students Thursday. He says the note made threats of explosives and bombs.
Classes were canceled Friday and trained professionals with bomb-sniffing dogs conducted a sweep of the school. They did not find anything unusual.
School will resume on Monday, with extra security and more deputies monitoring the school. The suspended student has not been arrested, and deputies are still investigating the incident.
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