Students and staff at Baldwin High School on Long Island are seeing tighter security at the school on Monday following a threatening message found scrawled inside the building.
Investigators won't say was was said in the message discovered over the weekend.
The message was aimed at bullies and written on a cafeteria window, said officials.
Students can anticipate a thorough investigation of backpacks on Monday.
Last month, a threatening message was written in a bathroom. A threatening message was also found inside the school in January forced a temporary lockdown.