Facebook Messenger and Instagram are under the facebook roof have down for several hours.
Peoples all around the world are complaining about the sending messages in the chat. They have mention that the messages they sent to their friends have not sent. Messenger did not support to the chat system. Sometimes it shows this person is unavailable on messenger. For a while, I thought it is on vanished mode.
Complaints against both platforms seem to have started at around 3:00 pm Indian Standard Time (IST).