Hamza clashes with US prosecutor
Abu Hamza, being tried under the name Mustafa Kamel Mustafa, was cross-examined by assistant US attorney John Cronan.
Four hostages died after the kidnapping, and a year later one ex-hostage interviewed him at his London mosque while writing a book.
Hamza conceded in court that he told her the attack was "Islamically justified".
The controversial imam told the prosecutor to "try to concentrate" and ask one question at a time. The judge told him to obey the rules and not to make speeches.