San Marcos PD: Man threatened to “shoot up a school”

SAN MARCOS, Texas (KXAN) — Police arrested a man who they say drove to Miller Middle School in San Marcos after threatening to “shoot up a school.” No students were injured, but the school was placed on lockdown as a precaution.

Officers said they received a call from a woman who became concerned after an ex-boyfriend made various threats, which included threats against a school.

A school resource officer assigned to Miller Middle School reportedly saw a vehicle matching the description of the suspect’s car and the school was placed on lockdown. As other officers approached the vehicle, the suspect drove away and led officers on a brief pursuit.

Joseph Thaddeus Nieschwietz, 22, was taken into custody and now faces several charges, including: cruelty to animals, a state jail felony; two counts of assault causing bodily injury stemming from a family violence situation; criminal trespass; and an accident involving damage to a vehicle. Police said he was not armed at the time of his arrest.

Students were released at their normal time after Nieschwietz was taken into custody. District officials said they notified parents of the lockdown via e-mail and telephone. provides commenting to allow for constructive discussion on the stories we cover. In order to comment here, you acknowledge you have read and agreed to our Terms of Service. Users who violate these terms, including use of vulgar language or racial slurs, will be banned. If you see an inappropriate comment, please flag it for our moderators to review.

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