Social media giant Facebook has somewhat been forced to reveal its plans to introduce an ‘unsend’ feature on its Messenger app after CEO Mark Zuckerberg was caught using it.

According to Techcrunch, a number of sources claim messages they’ve received from Zuckerberg no longer appear in their Messenger inbox, but their replies are still visible.

Facebook has admitted to developing an ‘unsend’ feature on Messenger and deleting Zuckerberg’s messages after computer hackers infiltrated Sony Pictures’ internal communications in 2014.

“After Sony Pictures’ emails were hacked in 2014, we made a number of changes to protect our executives’ communications,” a Facebook spokesperson told Techcrunch.

“These included limiting the retention period for Mark’s messages in Messenger. We did so in full compliance with our legal obligations to preserve messages.”

The social media giant has said it’s looking to make the unsend feature available for all Facebookers in the future.

“We will now be making a broader delete message feature available. This may take some time,” a Facebook spokeswoman told Bloomberg.