I am surmising these pics were taken by a man with a digital camera who was up front at the satge. If you look at the WPRI footage you can see a man with a digital camera taking pictures as the WPRI cameraman goes back to the front entrance.
The photographer, Dan Davidson, could not be reached yesterday. A spokesman for Gamma said an undisclosed party had bought the rights to the pictures, which cannot be published by other outlets until Saturday.