That is the nature of the beast. Each absolutely carried out the deaths and maiming of others independently.
However.
Each act of horrific violence was inspired by the ISIS ideology and each other. There is no coincidence these three terrorist acts occurred within 24 hours. That is part of the HOPE of the violent act, that it will inspire more and more and more violence.
There is no allowance for any form of ISIS in the USA. It is a violent terrorist network and it is not to be considered a religion. It is not. Regardless of the ideology there is only one thing on these men's minds and that is killing all those that are not like them. That is not a religion.
So.
The SBIs need to put ISIS on their list of active investigations and begin to arrest those within their jurisdictions affiliated with the terrorist network.