In the small town of Porvenir in department of Pando, a group of Evo Morales supporters were on their way to a support rally when they were met by an Anti-Evo mob. The local police quickly arrived and were in the process of mediating between the two groups when another band of Anti Evo supporters arrived on the scene with firearms, and opened fire on the pro-Evo group.
The toll is currently 8 dead and 34 injured. Reuters Spanish link here, Bolivian gov't website link here. I've tried to find a Bolivian opposition news media story on this, but it looks like they're going for the blackout tactics.
No further comment needed from Otto.
UPDATE: We now have a Reuters English language report here. They do it better than I can.