A bomb threat at Intel Ocotillo in Chandler cleared the building on Monday.
Police investigated after receiving a 911 call at 5:30 a.m. from the Fab 42 site, which is under construction.
Police gave the all-clear about 2:30 p.m. after nothing suspicious was found.
President Obama visited the site last year.
- Dignity Health World Class People. World Class Company. Excellent care, delivered with compassion, for all in need.
- Eyes on Education A view of Arizona's education system from all angles.