Man puts gun down in bathroom stall, shoots two people standing in hallway

A man put a gun down in a bathroom stall in a bar in upstate New York. The gun unintentionally discharged. The bullet went through two walls and hit two people standing in a hallway outside the restroom. First the bullet hit a man in the elbow and then it hit a woman in the midsection. Both were treated and released from a local hospital.
Police are trying to find out who was in the bathroom. But "there were 75 to 100 people in the bar and there were a lot of people running at the time."
Ohh shoot.