Natasha Vaughn-Holdridge is reporting for Columbia-Greene Media Ichabod Crane High School officials declared a shelter-in-place order on April 6. Posting to the district website, Superintendent Suzanne Guntlow reported that a "concerning social media post which referenced a weapon was brought to the attention of [the] administration by an Ichabod Crane high school student" and officials immediately followed emergency protocols and notified local law enforcement. The Columbia County Sheriff’s Office said that out of an abundance of caution the high school was under a hold-in-place and the middle and primary schools were in lock-out status. During a lock-out, students must stay in their classrooms and no one is permitted to enter or leave the building, but classes continue as planned. According to Guntlow, over the course of the day, the source of the post was identified and everyone involved was interviewed and searched. Columbia County Sheriff Don Krapf told the Times Union the social media post "caused concern, not only to the staff, but our agency," but he declined to disclose its content because of the investigation. In addition to the sheriff's office, members of the Troy, Albany and State police responded. Police dogs swept the area, Krapf said, but "located nothing of concern." Krapf said students were dismissed early and police conducted their final sweep of the school at 2:30 p.m. The lockdown was the second in as many days in the Capital Region. An email threat delivered to a staff member in the Menands district April 5, led to a lockout there.