By Sandra Rose  | 

David Dee Delgado/Getty Images

Dozens of NYC sanitation workers have been suspended without pay for three weeks for submitting falsified vaccination cards.

The sanitation workers submitted the vaccine cards in compliance with the Biden administration's Covid-19 vaccine mandates.

The cards verified that the workers received the single dose Johnson & Johnson vaccines, ABC News reports.

New York City's Sanitation Department followed up on the validity of the vaccine cards which were all issued by the same southern Brooklyn CVS store.

The department discovered that CVS stopped administering single dose Johnson & Johnson vaccines in May.

"These are very concerning allegations and we take them very seriously," Sanitation Department spokesman Joshua Goodman told ABC News. "Getting vaccinated is important to public health, and we do not tolerate anyone faking something that is a requirement of city employment."

"Anyone found to have faked their vaccination will be suspended without pay," Goodman added.

According to ABC NYC affiliate WABC, over 87% of the department's roughly 10,000 employees are either fully or partially vaccinated.