Mark Potting News Today

That remains to be answered. it within that the fbi wants answered before they definitively call this terrorism. we need a motive here. >> blake, thanks. we want to go to nbcs mark potting near the suspects ahome they rented in redland, california. what have we learned about what police and investigators are doing there today? >> well, hi, kate. behind me is that what you were talking, rented by the shooters. we dont know if they lived there or used it as a workspace. we have been watching fbi e...