A Norwegian man was charged Saturday with carrying out twin attacks that claimed at least 91 lives the day before, police said, DPA reported.
The 32-year-old, who has not been identified by officials, was arrested by special forces at the Utoya island, west of the capital Oslo, after allegedly attacking a youth camp organized by the Labour Party.
The death toll of 84 at Utoya could rise as police continue to search for victims, Oslo deputy police chief Roger Andresen said.
A few hours before the shootings, the suspect allegedly set off a bomb in central Oslo, which claimed seven lives, police said. That tally was not final, Andresen said.
The police official said the acts were defined as terror and could be punishable with a maximum 21-year prison term.