Interior minister Hans-Peter Friedrich spoke of a 'dimension of right-wing terrorism that we have not experienced before'.
The latest racist gang member arrested - identified only as Holger G, 37 - was detained today in Hanover.
He was seized as the government spoke of the danger of the gang that lurched from flag-waving and immigrant-baiting to bombing, bank robbing and serial murder.
Justice Minister Sabine Leutheusser-Schnarrenberger insisted on a speedy and complete investigation in to the series of killings.
'The information that we have so far creates a shocking image,' she said today.
Even Chancellor Angela Merkel, bogged down as she is with the euro crisis, took time out at a conference of her CDU party to say: 'We must be ever vigilant against such forms of extremism on the right.'
Germany is in a state of shock after the sophistication of the Nazi terrorists' plots became known on Friday. Read More