Anders Breivik
Anders Breivik of Norway.

Norwegian police have confirmed that they have put Anders Behring Breivik on suicide watch and are working with police around the world to identify links he may have had abroad.

At a press conference today, police addressed a range of issues from journalists, saying that they are "collaborating internationally" on their investigation.

They added: "We are looking at possible collaboration and possible links he might have had. And we have to get to the bottom of this."

Armed Police have been removed from Oslo city centre, it was confirmed, but police said that "people should not be worried about going about their daily lives in Oslo."

The police have also pledged to continue their search until all missing people are found. "Nothing will be left undone in this case. We will do everything we can to find all missing people," they said.

They added: "We have put in place a lot of support and the emergency services are dealing with this... Not one of the survivors will be left alone. We will support every single one."

Police have "some confirmed names" of victims. Families will be notified first before the names are released publically.

Police are also investigating the location of the original bomb blast, saying that they have checked the surrounding buildings and not found any sign of explosives. "The force of the bomb blast will give us a good idea about where the bomb was," they added.

Police were also quick to thank the public for the information they have sent in to help with the investigation.

They added: "Yesterday we said thank you to the public and to all those directly involved. The dignity they showed during yesterday's rally, where we had over 2000 people present, was wonderful."

Police also pleaded for some understanding with regard to their position. "We don't mind criticism but behind our uniforms is the average Norwegian citizen with feelings," they said.