DARBY – A Darby High School senior is in custody after allegedly making threatening social media posts that referenced the deadly school shooting in Florida last week.

Ravalli County Sheriff Steve Holton tells MTN News that 18-year-old MacLean William Kayser has been arrested and charged with felony assault with a weapon and is being held without bond in the Ravalli County Jail.

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Holton says Kayser is accused of posting a message on Snapchat that had been received by other students, which referenced the recent school shooting in Florida and implied a threat of violence to the Darby School District.

That lead concerned parents to report him to Darby school administrators over the weekend, who alerted the Darby Marshal’s Office.

Sheriff’s officials say Darby school administrators suspended the student this weekend and he did not go to school Monday. Ravalli County Sheriff’s deputies arrested him at his home at around 1:30 p.m. Monday.

Darby Schools Superintendent Loyd Rennaker tells MTN News that a “disturbing social media post was made by a student of a concerning nature, that it could be a threat”, over the weekend. Rennaker says they were “surprised” but said “they deal with difficult things.”

Holton says deputies are at the school Monday, but that there are no other individuals who are suspected to be involved with the threats. Classes were still being held on Monday during President’s Day.

Deputies will reportedly be at the school throughout the week.

Holton says Kayser is expected to be arraigned in Ravalli County Justice Court within the next few days.

Holton also asked that anyone with additional information about this incident should contact the Ravalli County Sheriff’s Office or Darby Marshal’s Office.

Reporting by Augusta McDonnell for MTN News