Bomb threat shuts Arlington school; no bomb found

Arlington Catholic High School on Medford Street was evacuated today after somebody called in a bomb threat shortly before 1:30 p.m. Arlington Police report:

After a thorough search, officers determined at 3:30 p.m. that nothing harmful was inside the school.

Police say they are now comparing notes with their counterparts in several other towns in eastern Massachusetts, where similar threats were called in.