According to the Pentagon, who has confirmed that Stone was injured, Spencer is in stable condition.

“A1C Spencer Stone has been transported to a local hospital, and is currently being treated for injury. The incident is currently under investigation by local law enforcement. He is currently in stable condition,” a statement from the U.S. Air Force reads.

According to CBS News, Stone was stabbed repeatedly. The incident happened at 21st and K Streets, CBS News reports.