It is unclear who leaked these photographs and why they were leaked. In one of the photos, two more cameramen and a video camera are visible. It would appear that there are more pictures and possibly a video of the event. The text narrative released with the photos claims (rather incredibly) that two assassins came out from behind the curtains with sub-machine guns (not shown in the photos), failed to fire, and then fainted. Then, according to this narrative, as army officers tended to the fainted assassins other assassins came in through the doors from outside the hall and the killings began.
The photos raise more questions than they answer.
I have reposted the set of 10 photographs on Flickr. Click here to view the photos.