The death toll from attacks in Norway has risen to 91 with police also confirming they have arrested a suspect whom they described as a 'right-wing Christian fundamentalist'.

In a press conference police said that they had arrested Anders Behring Breivik, 32, on suspicion of carrying out the Oslo bombing and the youth-camp shooting rampage.

Norwegian Breivik, did not appear to be linked to Islamist terrorism.

The suspect appeared to have acted alone and police said "it seems like that this is not linked to any international terrorist organisations at all".

Internet postings "suggest that he has some political traits directed toward the right, and anti-Muslim views".

On his Facebook page, he describes himself as a Christian and a conservative.

Earlier World leaders condemned the terrorist attacks.

UK Prime Minister David Cameron said the attacks were a "stark reminder of the threat we all face from terrorism".

The statement came as diplomats sought to establish whether any UK nationals had been caught up in the carnage.

Mr Cameron said: "My thoughts are with the wounded and those who have lost friends and family, and I know everyone in Britain will feel the same."

US President Barack Obama said the bombing was a reminder that the world has a role in stopping such terror from happening. He also expressed his condolences to Norway's people. Nato Secretary-General Anders Fogh Rasmussen called the blast a "heinous act".

Jose Manuel Barroso, president of the European Commission, expressed his "utmost shock", saying an attack of that magnitude is not "something one would expect in Norway, famously associated with peace at home and peacemaking abroad".