Witness trauma at Breivik trial
24 April 2012 Last updated at 13:51 BST
Witnesses in a Norway court have been describing the moments after a bomb went off outside the government headquarters in Oslo last July - killing eight people.
Anders Breivik, the man who admits planting the bomb, was able to slip away during the chaos that ensued.
He went on to kill 69 more people on the island of Utoya.
Richard Galpin reports.