TimmieTChapmanSEDALIA, Mo— A Sedalia teen is being held at the Pettis County jail after threatening a staff member at Smith-Cotton High School in Sedalia this morning.

UPDATE (12/14/15)

8:08 p.m. — Officials in Sedalia identified the 17-year-old student suspected of causing a disturbance with a knife at Smith-Cotton High School.

The Pettis County Sheriff’s Department said Timmie T. Chapman, Jr. of Sedalia, was taken into custody Monday morning following the incident.

The Department said upon arrival, the School Resource Deputy assigned to Smith-Cotton found school administration and a security officer struggling with Chapman on the floor in the high school’s lobby. The deputy was forced to use his Taser after Chapman continued to resist.

A lock-blade knife was found, believed by the Pettis County Sheriff’s Department to be used by Chapman. Officials said no one was injured during the incident that sent the school into lockdown.

Pettis County Prosecuting attorney Phillip Sawyer filed formal charges Monday afternoon of unlawful use of a weapon and resisting arrest. Chapman is still held at the Pettis County jail pending the posting of bond in the case.

smith-cotton hsORIGINAL (12/14/15)

11:46 a.m. — A release from the Pettis County Sheriff’s Office indicates a 17 year old student was taken into custody after a Pettis County resource officer was forced to deploy his taser. The teen was reported to have threatened an administrator with a knife around 9:30 this morning in a school hallway.

Other students were immediately placed in lockdown in their classrooms. No injuries were reported.

The Pettis County Sheriff is expected to make a formal release at a later time.

KMZU will continue to monitor the incident and bring you more information as details are released.