Elmo's X account posted antisemitic and racist posts after it was hacked on Sunday, a spokesperson for the makers of "Sesame Street" said in a statement.

"Elmo's X account was briefly compromised yesterday by an unknown hacker who posted disgusting messages, including antisemitic and racist posts. The account has since been secured," a spokesperson for Sesame Workshop, the nonprofit educational organization behind Sesame Street, said in a statement to ABC News on Monday.

The owner of “Sesame Street” said it was working to restore control of Elmo’s social media account after the cyberattack on the fuzzy red monster, a beloved character on the children’s show.