Law enforcement responded to area schools in two separate incidents on Monday and Tuesday, but no students or staff have been harmed. WMRA's Randi B. Hagi reports.
The Frederick County Sheriff's Office released in a statement on Monday that shortly after 11:30 a.m., someone called in a bomb threat to Millbrook High School.

WARREN GOSNELL: A sweep of the building was performed using various K-9s from surrounding agencies. No devices were found. No evidence of a device having been there was located. A secondary search was also conducted just to be sure, again, with nothing being found.
Lieutenant Warren Gosnell is the agency's public information officer. He said a 17-year-old was taken into custody the next county over for making the false threat.
GOSNELL: They were actually in school in class in Clarke County.
Specific charges in that case are still pending.
Then, around 1:30 p.m. on Tuesday, the Charlottesville Police Department posted on Facebook that officers had responded to Buford Middle School in response to a trespasser outside. By 2:45 p.m., Buford had been released from lockdown, and all students and staff were safe.
Police also secured Greenbrier Elementary and Charlottesville High School, because the trespasser had a possible connection to those schools as well.
The suspect has been identified as 22-year-old Dionte Tremaine Ruffin of Albemarle County, who is also wanted on unrelated charges. The Charlottesville Police Department will have a uniformed presence at each of the three schools for the rest of the week.