The man who carried out bomb and gun attacks in Norway last year which left 77 people dead has pleaded not guilty at the start of his trial in Oslo. Anders Behring Breivik attacked a youth camp of the governing Labour party on the island of Utoeya, after setting off a car bomb in the capital.

On entering the courtroom, Breivik gave a closed-first salute to those present. He later proceeded to tell the judge that he refused to recognise the court, saying it derived its authority from multiculturalism.

Prosecutor Inga Bejer Engh started the trial by giving a detailed account of how each person was killed.

Breivik wiped away tears as prosecutors showed a 12-minute-long film about the evils of "multiculturalism" and "Islamic demographic warfare", which Breivik posted online on the day of the attacks.

Some of the survivors - among them Bjoern Ihler (foreground) - and relatives of those killed reportedly gasped after footage was played of Breivik's explosives-packed vehicle exploding. The defendant was impassive, and at times smiled.

At the end of the indictment, Breivik told the judge, Wenche Arntzen, that he "acknowledged" the acts committed, but said he did not accept criminal responsibility.