Police have launched a criminal investigation into a threat found on a bathroom wall at East Hampton High School on Monday, which forced the evacuation of the school for several hours.
Someone found the threat at 10 a.m. and a school administrator was the one to pull the fire alarm.
Students said the note contained a bomb threat, but police have not confirmed that.
While police searched the building, students were taken to St. Patrick's Church and parents were alerted through voice mail.
Students were allowed to return to their school just after noon.
School officials said they didn't release the students because their belongings are in the school and school would dismiss at the normal time.
Authorities are calling this an active criminal investigation and said they will be seeking charges.