OSLO, July 23, 2011 (AFP) - Norwegian media on Saturday attributed a long and hate-filled YouTube video featuring tirades against Islam, Marxism and multiculturalism to the suspect in the massacre of 92 people in twin attacks.

Oslo police could not immediately comment on whether suspect Anders Behring Breiving, 32, was behind the 12-minute video that alternates between praise for Medieval Crusaders and Islamophobic rants.

The film, which was removed from YouTube late Saturday for not conforming to the website's rules, shows Behring Breiving in three photographs, including one where he aims an assault rifle.

The detained suspect is accused of shooting dead at least 85 people at a youth Labour Party meeting on an island and killing seven more in a car bomb explosion which ripped through government buildings in Oslo on Friday.

The video was put on YouTube on the same day and describes Islam as "the main genocidal ideology".

"Before beginning our Crusade, we must do our duty by decimating cultural Marxism," reads one of the texts that appear in the video.

Posted by user BerwickAndrew, the film is in four chapters: The Rise of Cultural Marxism, Islamic Colonialism, Hope and Renewal.

Norwegian daily Dagbladet said the film is a summary of a reported 1,500 manifesto that Behring Breiving told police he had published under the pseudonym Andrew Berwick.

Friday's attacks targeted left-wing symbols: the seat of the Labour-led government and a Labour Party youth camp.