Just a wild guess on the official report.
One lone, mentally unbalanced, unaffiliated gunman killed. The reports of accomplices turned out to be inaccurate.
5 seconds ago, I heard 3 perp dead, 2 on the lam.
The only reason they know that is because the perps were ghetto blacks who don't know how to shoot. There are many, many white people with both the equipment and the skill to hit a human target from 400yd away, which in a city is the same as never-ketchum. The only thing they're lacking is the motive.
So far.
Be best to keep it that way.
