On Facebook Messenger will soon be the option for you to delete a message that you previously sent in chat. The function has been anticipated in the release notes in the last update. The user will be able to soon remove a message from a chat after sending. In practice, if you send by mistake the wrong photo, incorrect information, or a message in the conversation is wrong, you can easily remove the message within 10 minutes from sending. [...]

Link to the original article: On Facebook Messenger you will be able to delete the messages sent