JACKSONVILLE, Fla. - Many substitute teachers have probably thought about threatening to use a stun gun on middle school students — but one in Florida may actually have made one.

The Florida Times-Union reported Wednesday that that 26-year-old Kiara Ansley is accused of threatening to use a stun gun on students at Jefferson Davis Middle School in Jacksonville. She was charged Tuesday with possessing a weapon on school grounds and released.

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Principal Nidia Ashby told parents that after learning of the threats, school police found the stun gun. District officials said they have told the contractor that provides substitutes they no longer want Ansley sent to their schools.

Ansley's attorney Dexter Davis told the paper it was Ansley's first day teaching. He said students had surrounded her desk, knocked items off and refused to sit down. He said she felt threatened.