UPDATE: Teen who spurred lockdown at Gayville-Volin school in custody

YANKTON COUNTY, S.D. - Authorities say the suspect who triggered a lockdown at the Gayville-Volin School District is now in custody.

The Yankton County Sheriff's Office received a report of the threat around 8 a.m. Wednesday, according to Chief Deputy Mike Rothschadl.

Rothschadl said the 16-year-old suspect threatened to "shoot up the school." The Gayville-Volin school was placed on lockdown immediately following the report.

Around 10:15 a.m., the Sheriff's Office issued a release saying the suspect is in custody, and the lockdown is over.

No other details about the incident have been released. The Yankton County Sheriff's Office is still investigating.

The Yankton County Sheriff's Office, the South Dakota Highway Patrol, and Game Fish and Parks all assisted responding to the incident.

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The Yankton County Sheriff's Office confirmed the Gayville-Volin School District is on lockdown Wednesday morning.

It's unknown at this point why the school is on lockdown, but law enforcement is on scene.

The Gayville-Volin School District serves the communities of Gayville, Volin and Mission Hill.

Stick with KSFY News for updates as we learn more about this developing situation.