Boise police were still investigating Thursday evening after a building on the Hewlett-Packard campus was evacuated.
Police were trying to determine who left a note that made vague references to the possibility of violence at the building, which is not part of Hewlett-Packard. Maximus has been setting up a call center there to serve health insurance exchanges around the country as part of the Affordable Care Act.
Police did not order the evacuation of the building, Boise police spokeswoman Lynn Hightower said. The situation affected a private business with their own security protocols, police said.
The evacuation was under way when officers arrived. Police estimated that around 500 employees were evacuated.
After officers arrived on scene, they were able to quickly determine that there was no threat to public safety, Hightower said. Police activity was contained to the Maximus building.
As of 6 p.m., police had cleared the scene, and the building had been handed back over to management.