Numerous Hudson Valley schools report shots fired hoaxes; threats prove to be not credible

Schools in Yonkers, Chappaqua, Pleasantville, and Putnam Valley say they were all targeted in what appears to be a nationwide hoax.
They come just one day after a series of swatting incidents in Pennsylvania and Massachusetts. On Thursday, it appears schools across new York were targeted. 
Police are trying to determine who called in phony active shooter reports that prompted school lockdowns at school districts across our area.
In each instance, the caller was anonymous, and the threats were deemed not credible.
Real or not, the swatting incidents had parents, students and staff on edge.
School districts impacted by the phony active shooter calls say they followed protocols and see this incident as an opportunity to improve their response in case a real threat happens.