FALLSBURG - Six teachers and aides at Cosor Elementary School, who are at the center of a heroin probe, have all apparently tested negative for the drug, according to a school-related professionals' union.

On Feb. 6, six teachers and aides were seen on surveillance video using a bathroom, where an empty bag of heroin was later found. The president of the union announced that drug tests for all of the faculty involved came back negative.

Some parents are not happy with the way the school has handled the incident, saying the teachers should have been put on administrative leave during the investigation.

Accused teachers spoke during a school board meeting Wednesday night at Fallsburg High School, demanding that the district clear their names.

Fallsburg Central Schools Superintendent Dr. Ivan Katz says the investigation is in the hands of the district attorney and he's not commenting further.