New York City's Department of Sanitation denied Thursday anti-Trump signs placed on garbage bins around the city were created or implemented by the agency.

In response to a tweet, DSNY claimed they do not condone unlawful defacement of city litter baskets, and an investigation is underway.

"These were not created or issued by the Department of Sanitation, and we do not condone unlawful defacement of City litter baskets. We are investigating this act of vandalism," the DSNY Twitter account said.

The anti-Trump signs depict a person wearing Trump's signature "Make America Great Again" hat and holding a Chick-Fil-A cup. The cartoon depiction also has a Confederate flag tattoo, and is crossed out in a red symbol. The sign reads, "Keep NYC Trash Free."

New York City mayor Bill de Blasio previously called for New Yorkers to not patronize Chick-Fil-A because the company opposes gay marriage. In 2013, the company faced scrutiny when CEO Dan Cathy criticized same-sex marriage, and for donating millions of dollars to anti-gay groups.