Yes, there is but it's possible that no one knows yet what it is.
So like you, I will probably view what the MSM has to say on it with a grain of salt until we can hear it from a reliable source.
BTW, the bombing of a Doctors car in Arkansas, which happened on Feb. 2nd has no assigned motive yet either.Generally that means it was a personal motive involving marital infidelity, as most of those cases go, but we may never know.
The MSM has actually abandoned true investigative reporting for the realm of political self censorship.If a dem is involved, the news is quickly back paged or not followed up.