Excerpt:
European authorities are investigating possible links between the man who has confessed to last week's massacre in Norway and right-wing elements across the region, putting Europe's recently ascendant far-right movements on the defensive.
Europol, which handles transnational criminal investigations in Europe, has assigned dozens of officers to assist Norwegian police. A spokesman for the agency declined to offer specifics, but said Europol had given Norwegian authorities access to its database of "European extremists."
The U.K. National Security Council said this week it would order police to help investigate any U.K. connections to the attacks.