The European Union and NATO have strongly condemned the bombing attack in Norway's capital of Oslo that killed two people and injured more than a dozen.
NATO Secretary-General Anders Fogh Rasmussen called the blast Friday a "heinous act."
About 400 Norwegian soldiers are serving as part of the NATO-led international force in Afghanistan. Ten Norwegians have died in the war.
Jose Manuel Barroso, president of the European Commission, expressed his "utmost shock" over the blast.
Barroso said that an attack of this magnitude was not "something one would expect in Norway, famously associated with peace at home and peacemaking abroad."