Oolite Bulletins

Several times now, I've jumped into systems and seen flashes of laser fire in the distance. When I blast up to the fight with afterburners, I find a couple of clean ships shooting at a 3rd clean ship. Currently I'm seeing a couple of Sidewinder Scouts (Clean) chasing a Python (Clean) and shooting at it. The chase is at pretty low speed, the Python is not evading, but the Sidewinders seem unable to hit it.

What's going on with that?

Most likely a friendly-fire incident. They started out against a common foe, but then one accidentally hit the other, and the other switched target (doesn't happen often, but it does happen).

Blast them all, ask questions later.
Just don't let the Galcops see you doing it.