Sheriff's K-9 teams rendereded all three campuses of Solano Community College safe Monday evening, sheriff's officials said.
As of 5:15 p.m., K-9 teams had swept the college's campuses in Fairfield, Vacaville and Vallejo after two bomb threats were phoned in around noon Monday.
After the threats were made, the three campuses were evacuated for the rest of the day.
Classes will resume Thursday because Tuesday and Wednesday are professional development days for faculty and staff.
Sheriff's officials wrote on Twitter that all students and staff were safe, and that school administrators issued the mandatory evacuation order out of an abundance of caution.