Norwegian police arrested 25 persons described as "neo-Nazis", and fully 23 of them were from Sweden.
The swedish activists seek to spread the racial ideology across the border.
A demonstration in Trondheim ended with several street fights and arrests. Newspaper Aftenposten reported that it was organized by a group called Den norske motstandsbevegelsen (The Norwegian Resistance Movement) with many demonstrators representing a similar Swedish group called Svenska Motståndsrörelsen (The Swedish Resistance Movement).
Norwegian liberal extremist author Øyvind Strømmen, who follows the racial patriots closely in Scandinavia, told Aftenposten that "he’s worried about what kind of influence Swedish neo-Nazis have on extremist groups in Norway".
"The Norwegian resistance movement is an offspring of the Swedish group," Strømmen said. "The Swedish neo-Nazis seem to have a desire to build up a stronger neo-Nazi movement in Norway."
The Swedish group has earlier claimed it seeks to create a Nordic reich, which the Norwegian group defines as a new state including at least Norway and Sweden. The Norwegian group was founded in 2010 and has been active in Trondheim for around a year. Norwegian patriots have had a lot of inspiration from Sweden.
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Norway’s police intelligence unit PST was careful in assessing the demonstration in Trondheim. “We can’t make any conclusions after this single event,” said PST senior adviser Siv Alsén. “We can therefore not make any concrete comments now.”
PST noted, however, that tighter contact between Norwegian and foreign organizations "could further radicalize" some groups. Sweden’s security police unit Säpå, has said there are traditional ties between the groups in Sweden and Norway.