The popular X account for the “Sesame Street" character Elmo began posting controversial messages that were quickly deleted after going viral on Sunday.

The X account of Sesame Street's Elmo, a beloved children's TV character, shared antisemitic and anti-Donald Trump posts after being hacked on Sunday. Sesame Workshop, the nonprofit behind Sesame Street,

"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.