A handful of New York City Department of Education employees will be suspended without pay for allegedly submitting counterfeit COVID-19 vaccine cards, according to reports.

The employees who will be placed on leave include teachers and administrators. The suspected offenders received emails on Wednesday notifying them not to return to work following an upcoming vacation, according to The New York Post.

Nathaniel Styer, a spokesperson for the DOE, referred to the fake vaccination cards as “illegal,” claiming they “undermine the best line of protection” schools have to protect against COVID-19.

“We immediately moved to put these employees — fewer than 100 — on leave without pay,” Styer clarified.

According to NBC New York, the United Federation of Teachers has indicated that it plans to pursue legal action if the employees in question do not remain on the payroll.

“It is wholly improper for the DOE to unilaterally remove UFT members from the payroll based on mere conjecture that vaccination documentation is fraudulent,” UFT general counsel Beth Norton said to the DOE.