The pop star revealed the sad news on his Twitter Monday night, telling fans he was "heartbroken" over the loss of the child. Carter and his wife Lauren Kitt, who were expecting a baby girl, had been looking forward to having a little sister for their son Odin, 2.
"God give us peace during this time," Carter tweeted. "I really was looking forward to meeting her after 3 months. I'm heartbroken."
The "I Want It That Way" singer also said he was unsure if he was going to be able to perform because of the devastating news. The boy band is currently in the middle of their Las Vegas residency. In addition, Carter has a solo concert scheduled in Lima, Peru as part of his South American tour.
However, the singer later explained that although it would be difficult, he was still going to perform.
"This will be hard," he said. "But for the love of my fans here in Lima I'll be on the stage tonight."
Read all of Carter's tweets below.
God give us peace during this time. I really was looking forward to meeting her after 3 months. 😢. I'm heart broken.