A Wasatch High School student was arrested Wednesday after someone alerted police of a social media threat.

After being taken into custody, the student didn’t understand the consequences of making the post, according to a notice on the Wasatch County School District’s website.

Wednesday’s alleged threat is the second for the school in a week. On Feb. 21, police arrested a 15-year-old boy after a friend posted a video of him holding an assault rifle, racking it and warning Wasatch High School students to not go to school the next day.

The post, police determined, was a joke.

In Wednesday’s notice, Wasatch County School District officials said a law enforcement officer will be posted in each of its schools indefinitely.

“Parents, please take some time to discuss with your children the seriousness of posting any type of threat or anything that could be perceived as a threat on social media,” the notice said.

School-shooting threats increased in Utah after the Feb. 14 mass shooting at a Florida high school, prompting local law enforcement to start a campaign to teach young people about the consequences of such posts.

The posts, even if they’re jokes, can lead to a student being accused of making a terroristic threat, which can be charged as a class B misdemeanor, a second-degree felony or a third-degree felony.