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

"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 posts on Elmo’s account on Sunday called for the extermination of Jewish people, referred to United States President Donald Trump as a “puppet” of Israeli Prime Minister Benjamin Netanyahu and demanded the release of law enforcement files about Epstein, the accused sex trafficker who died in 2019.