Students and staff at MSAD 75 schools have been issued a shelter in place order after a Caribou man made the threat against a former student in the area.
The man allegedly threatened to find where the student lives and bring a gun the school.
In a statement to local media interim Superintendent Heidi O’Leary said: ‘I want to stress that there is no indication of any immediate danger to students and staff, but we are taking precautionary safety measures.
‘I understand this is very alarming news for our community. We are working closely with law enforcement to gather additional details and ensure our students remain safe. I will provide another update as soon as we have more definitive information to share.’
It comes just a week after Lewiston gunman Robert Card murdered 18 people in the quiet Maine town.