Arlington Police Chief Will Johnson tweeted Saturday morning that officers responded that morning to a call about a child in a dumpster.
Officers reportedly performed CPR on the child when they arrived. Johnson said the baby was taken to the hospital, where they are being cared for.
It was not immediately clear how the baby got there or who their parents are.
"I can only imagine maybe what the mother's going through. There's always a reason for something like this, so we're not casting judgment, but we definitely need to figure out who placed this newborn child there," Arlington Police Lt. Chris Cook said, according to NBC5.
Police ask anyone with information on the child to call 911 or send an anonymous tip to Tarrant County Crime Stoppers at 817-469-TIPS.