MADISON, S.D. (KSFY) - One person has been arrested for a "concerning" text message that put the Madison Central School District into "perimeter secure" status on Wednesday.
According to the Lake County Sheriff's Office, Daniel Rhodes was arrested and charged with simple assault and unlawful use of a phone.
Three people were detained after a Lake County resident received the text message and alerted authorities, who in turn alerted the schools.
The sheriff's office said the message stated "the hunted is about to start hunting" and specifically referenced Madison.
Madison Central schools remained in secure status until Wednesday afternoon.
"Perimeter secure" status entails all doors into the school are locked, and no one from outside the school is allowed access without an escort. Activities within the school continued like normal.
The incident was investigated by the Lake County Sheriff's Office, the Madison Police Department and the South Dakota Division of Criminal Investigation.