The account of the 3-year-old Sesame Street character turned hateful and certainly not suitable for kids. Here's what the hacked account said.

"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.

Sesame Workshop worked to regain full control over its Elmo account on the X platform Monday after a hacker gained access and posted a string of racist and antisemitic messages.