**A man has killed at least three people at a gymnasium in the US state of Pennsylvania.**Up to 15 people were reportedly hit by gunfire in the town of Bridgeville near Pittsburgh, and there are reports that five are in a critical condition.
An eyewitness told a local TV station that a man entered an all-female dance class, turned off the lights, took a gun out of a bag and began firing.
“People everywhere were screaming. It was horrible,” said the witness.
The gunman is also reported to be dead.