PARKLAND, FLA. (WSVN) - New security measures went into effect at Marjory Stoneman Douglas High School, Thursday.

Ten Broward Sheriff’s Office deputies and eight Florida Highway Patrol troopers are now stationed on the campus and at every entrance and exit to the school.

The new security measures were announced after three Stoneman Douglas students were arrested Monday. Two of the students were accused of carrying knives onto school grounds, and the third was arrested for posting a social media threat that included a picture of a gun and bullets.

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