Norwegian police have admitted for the first time that they could have responded faster to a massacre at a youth camp last July.
Anders Behring Breivik opened fire on young activists gathered on Utoeya Island last summer, killing 69 people.
The police, distracted by a bomb Breivik had set off in Oslo and hampered by technical failures, arrived an hour after his killing spree began.
The State Police Director apologised on behalf of the police.
Overall 77 people were killed and 242 were injured in Breivik's attacks, the worst violence Norway has seen since the Second World War.
Breivik is expected to go on trial on 16 April.