Outgoing Norwegian Prime Minister Jens Stoltenberg has challenged Siv Jensen, leader of the anti-immigration Progress Party, to publicly apologise for using the term "sneak-islamization".
"If the deputy chairperson is able to regret it in English, I assume that the party leader Siv Jensen can regret it in Norwegian," Stoltenberg said on Tuesday after the Progress Party briefed international press on its policies.
But Jensen on Tuesday evening stood by her provocative past statements.
"I'm not going to apologize for that and I and the Progress Party will continue to fight the emergence of such radical forces and the ideas they advocate," she wrote in an email to VG newspaper.
In February 2009, Jensen said: "The truth is that we are beginning to allow a form of sneak-Islamization to take place in this country."
She said on Tuesday that she remained concerned by radial Islamic groups.
"I am concerned that we have radical groups in Norway who want Shariah law and an entirely different way of organizing society in Norway. No one should be in any doubt that this is an important issue for us," she said.