Somerville High School in Massachusetts was placed on lockdown due to a phone threat.

Somerville High School in Massachusetts was placed on lockdown Friday morning due to a phone threat. A "secure and hold" procedure began at 9:30 a.m., confining students and staff to classrooms while police investigated. No details about the threat or any arrests have been released. After an hour-long search revealed no safety issues, police will maintain a presence outside the school for the day. Counseling support is available for students.