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.
After the threats were made, the three campuses were evacuated for the rest of the day.
Classes will resume Thursday.
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.
All students / staff are safe. In an abundance of caution, the Superintendent/Pres. of Solano Community College issues a mandatory evacuation order for all Solano Comunity College campuses after recieving two telephonic bomb threats around noon. This is an ongoing investigation.— Solano Sheriff (@SolanoSheriff) March 12, 2018