The evidence is that consciousness is tied to the physical somehow (via brains at least). What this means, we haven't been able to figure out. Or at least, there is no consensus.
I am not denying it is tied to the physical, that seems fairly obvious, but it doesn't mean that it is a only physical phenomenon. A radio is not the same as the channel that it is playing and one is tied to the other.
Maybe you would sound more clear if you explained what else, different from "physical" there is that conciousness, or anything else for that matter, could be attributed to.