The UN believes the violence in Kyrgyzstan started with coordinated attacks.  The spokesman for the UN Human Rights Commissioner said

...So it might be wrong to cast it, at least in origin, as an inter-ethnic conflict. There seems to be other agendas driving it initially. But once it start to take off on ethnic lines, then of course you start to get a clear divide and tit-for-tat reactions which is what's so particularly dangerous...