The Niagara County Sheriff's Office is investigating what the district describes as an "alarming social media post" involving Niagara Wheatfield schools.
"There is an unconfirmed, I stress unconfirmed report, that someone saw an alarming social media post," superintendent Daniel Ljiljanich posted on the district's web site.
The district said all buildings operate on lockout each day and all students and staff are safe.
There will be an increased police presence at all Niagara Wheatfield schools for the remainder of the day, the superintendent said.
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