Police in Norway say Anders Behring Breivik, the man who has confessed to carrying out the attacks that killed 77 people on July 22, has told police he also considered other targets.
However, a police prosecutor refused to confirm a Norwegian press report that they included Norway's royal palace and the headquarters of the governing Labor Party in Oslo.
Police questioned Breivik for 10 hours on July 29, the second time he had been interrogated since the attacks exactly one week earlier.
Breivik has acknowledged responsibility for the shooting attacks at a political youth summer camp on the island of Utoeya on July 22 that left 69 people dead and a car bombing near the government headquarters in Oslo earlier the same day that killed eight.
Police recently revised the latest death toll upward from 76 to 77, after initially suggesting more than 90 people had been killed in the attacks that sent shock waves through Norway and around the world.
compiled from agency reports