At least four people were killed and another 10 injured when a gunman went on a shooting spree at a fitness gym in Pennsylvania being used by as many as 70 people at the time. The shooter, unidentified so far, was among the dead, CNN reported quoting local officials. A man carrying a duffel bag walked into an exercise room at the LA Fitness Center in Collier, stood in a corner for about a minute   read more »