Oslo centre on Saturday 23rd July after a powerful bomb blast rocked government and media buildings in Norway's capital Oslo on July 22, 2011, causing "deaths and injuries" and dealing heavy damage. LEHTIKUVA / Roni Rekomaa *** FINLAND OUT. NO THIRD PARTY SALES. ***

Soldiers guarding in Oslo centre on Saturday 23rd July after a powerful bomb blast rocked government and media buildings in Norway's capital Oslo on July 22, 2011, causing "deaths and injuries" and dealing heavy damage. LEHTIKUVA / Roni Rekomaa *** FINLAND OUT. NO THIRD PARTY SALES. ***

The flags of the City Hall are at half mast on July 23, 2011 in Olso. LEHTIKUVA / Roni Rekomaa *** FINLAND OUT. NO THIRD PARTY SALES. ***

A flag is at half mast on July 23, 2011 in Olso. LEHTIKUVA / Roni Rekomaa *** FINLAND OUT. NO THIRD PARTY SALES. ***

A massage saying that the struggle for democratisation, solidarity and anti racism shall win. Laid down between the flowers outside Oslo Cathedral in memory for the many youths that died in the Ut?ya Shooting and the people that died in the bombing of the ministerial area.

A young grieving women sitting on the ground besides the place where many people have left flowers, candles, messages and Norwegian flags outside the Oslo cathedral.

Two friends laying down candles for the victims of the Norwegian ministerial bombing and the many youths that died in the Ut?ya Shooting

A couple sitting on the ground holding hands besides the many people have left flowers, candles, messages and Norwegian flags outside the Oslo cathedral.

A woman standing and staring in to the distance beside the many flowers, candles, messages and Norwegian flags left outside the Oslo cathedral.

Three friends are standing close to each other lighting candles outside Oslo Cathedral.

Norwegian military and police personnel still guarding one of the entrances to the ministerial area in the night after some of the area was destroyed in the bombing the previous day.

Women light candles as people stand in silence at the entrance of Norway's embassy in Stockholm on July 23, 2011 as they gathered to pay tribute to the victims of the July 22 twin attacks on a youth camp and the government headquarters that killed 91 people in Norway's deadliest post-war tragedy. AFP PHOTO / SCANPIX SWEDEN / JOHAN JEPPSSON

A woman lights candles as people stand in silence at the entrance of Norway's embassy in Stockholm on July 23, 2011 as they gathered to pay tribute to the victims of the July 22 twin attacks on a youth camp and the government headquarters that killed 91 people in Norway's deadliest post-war tragedy. AFP PHOTO / SCANPIX SWEDEN / JOHAN JEPPSSON

People place flowers and light candles at the entrance to Norway's embassy in Stockholm on Saturday July 23, 2011, to pay tribute to the victims of twin attacks at the government headquarters building in Oslo and on a youth camp near to the capital, leaving at least 91 dead. ( AP Photo/Johan Jeppsson) SWEDEN OUT

Two women light candles at the entrance of Norway's embassy in Stockholm on Saturday July 23, 2011, as people gather to pay tribute to the victims of twin attacks at the government headquarters building in Oslo and on a youth camp near to the capital, leaving at least 91 dead. ( AP Photo/Johan Jeppsson) SWEDEN OUT