Pais has shown an “infatuation” with the 1999 shooting at Columbine, said Dean Phillips, head of the Denver office of the FBI, which is leading the investigation. These included Aurora Public Schools and Cherry Creek Schools, as well as Jefferson County Public Schools, which includes Columbine High School. “It’s certainly not the first threat we’ve had that involves Columbine High School,” said Jefferson County Sheriff Jeff Shrader at the Tuesday briefing. The safety unit run by Jefferson County Public Schools is considered one of the most sophisticated school security systems in the country. That system was tested in December, when Columbine High School went into lockout for hours on a Thursday.

Source: National Post April 17, 2019 13:18 UTC