From USA Today:

"I don't think anyone could have stopped him," Allegheny County police Superintendent Charles Moffatt said at a news conference in the parking lot of the LA Fitness center in Collier Township (PA) early Wednesday.

Moffatt said police were not sure who the target of the shooting was but that the gunman went into the health club planning to shoot several people — firing "multiple" weapons "indiscriminately," Moffatt said — and did not say anything before unleashing a burst of bullets.

"He walked right into the room where the shootings occurred as if he knew exactly where he was going," Moffatt said.

"All of us girls were just ducking behind each other and it was just, you know, I was behind a girl, one of the girls in front to get hit, and when he was in the opposite corner shooting, I booked it," Stacey Falk, 26, of Bridgeville, who was in the class, told WPXI-TV.

Two women and the man believed to be the shooter died at the scene Tuesday night and another woman died on the way to a hospital...

Five victims arrived in critical condition at UPMC Mercy Hospital, but three were upgraded to serious condition by early Wednesday. Two women remained in fair condition at Allegheny General Hospital, hospital officials said. Two female victims were in stable condition at St. Clair Hospital, spokesman Rich Sieber said Tuesday, but their conditions were not immediately available Wednesday.

By early Wednesday, Moffatt said two victims remained critical, two others were in surgery and two had reportedly been treated and released, with the others still hospitalized.

You go to the gym to get healthier and take of yourself, only to end up hospitalized or dead. That's some real fucked up irony.

People are crazy these days.