torture him to death while filming the event, using a meeting about an unsigned contract to ambush him. Vikernes claims he intended to hand Euronymous the signed contract that night and "tell him to fuck off", but that Euronymous panicked and attacked him first. The self-defense story is doubted by Faust, while Necrobutcher believes Vikernes killed Euronymous due to the death threats he received from him. Necrobutcher later alleged that he also intended to murder Euronymous himself due to him tastelessly capitalizing on Dead's suicide. Vikernes was arrested on 19 August 1993, and many other members of the scene were taken in for questioning around the same time. Some confessed to their crimes and implicated others. In May 1994, Vikernes was sentenced to 21 years in prison (Norway's maximum penalty) for the murder of Euronymous, the arson of four churches, and for possession of 150 kg of explosives. Two churches were burned the day he was sentenced, "presumably as a statement of symbolic support". Blackthorn was sentenced to eight years in prison for being an accomplice to the murder. That month saw the release of the Mayhem album De Mysteriis Dom Sathanas, which features Euronymous on guitar and Vikernes on bass guitar. Euronymous's family had asked Mayhem's drummer, Hellhammer, to remove the bass tracks recorded by Vikernes, but Hellhammer said, "I thought it was appropriate that the murderer and victim were on the same record." Vikernes was released from prison in 2009. Conflict with other music scenes There was a strong rivalry between Norwegian black metal and Swedish death metal scenes. Fenriz and Tchort have noted that Norwegian black metal musicians had become "fed up with the whole death metal scene" and that "death metal was very uncool in Oslo" at the time. A number of times, Euronymous sent death threats to some of the more 'mainstream' death metal groups in Europe. Allegedly, a group of Norwegian black metal fans even plotted to kidnap and murder certain Swedish death metal musicians. There was also rivalry between Norwegian and Finnish black metal bands. Impaled Nazarene printed "No orders from Norway accepted" and "" ('Death to the arseholes of Norway!') on early pressings of their first album and innuendo and snarky comments were made in fanzines. Beherit's mainman 'Nuclear Holocausto' used the rivalry to play a series of telephone pranks on Mika Luttinen (of Impaled Nazarene) in which he would call him