One policeman and four of the assailants were killed in the confrontation.
Explosives for the device were sent to Australia via air cargo from Turkey, and the bomb was assembled with assistance from an Islamic State commander, said federal police.
How politicians talk after terrorist attacks correlates with whether hate crimes against Muslims rise or fall, research shows.
Breivik raised his right arm to make the flat-handed Nazi-style salute as he entered court in a converted gym.
Milan Vuckovic based his video presentation on Isao Hashimoto's work depicting nuclear explosions