The Children's Hospital of Wisconsin was on lockdown Thursday after a man fired a handgun on its seventh floor, Milwaukee County Sheriff David Clarke said.
The shooter was injured and taken into custody by law enforcement officers who were trying to serve him a warrant, Clarke said. He did not identify the shooter and said no other injuries were reported.
In a statement, the hospital said, "The situation has been contained. The hospital building itself remains locked down until law enforcement issues a complete all-clear."
The facility describes itself on its Web site as being one of the busiest pediatric hospitals in the nation, having treated more than 350,000 patients in 2011.