Overview
- The Sussex Hamilton School District placed Lannon Elementary on a hold in the mid-afternoon after deputies responded to a trespassing complaint at a home on Lannon Road on Thursday, May 21.
- Waukesha County deputies described the incident as a standoff and called in the Waukesha County Tactical Enforcement Unit to secure the scene.
- Officials said a 40-year-old man with an active warrant refused commands at the home and was taken into custody by the tactical unit.
- The school's hold was lifted and students were dismissed after the arrest, with district officials saying instruction continued inside the building during the precautionary measure.
- Deputies established law-enforcement boundaries and asked parents not to come to the school; no injuries were reported and further investigative or legal follow-up was not detailed in available reports.