Suomen Sisu, a Finnish nationalist organisation, has posted Danish daily Jyllands-Posten's cartoons of the prophet Muhammad on its website.
The organisation, which calls itself "a revolutionary Finnish nationalist movement", said in a statement dated Friday that the move was a response to what it says was a decision by the Swedish Security Police (Säpo) and the country's Ministry for Foreign Affairs to pull the plug on SD-Kuriren, the website of the Sweden Democrats, a nationalist party.
SD-Kuriren was closed down on Thursday after it posted the cartoon.
Laila Freivalds, the Swedish foreign minister, sternly denied any government involvement, but the leadership of Säpo said it had contacted web hosting firm Levonline. Torkel Nyberg, the chief executive of Levonline, told news agency Tidningarnas Telegrambyrå (TT) that the decision to shut down the site was entirely the company's.
But Mr Nyberg added that Levonline had had discussions with the ministry and Säpo over the matter.