The guerrilla group once headed by Mullah Krekar, who's currently battling a deportation order in an Oslo court, reportedly cut the throats of dozens of prisoners before fleeing US troops in 2003. The chilling report came from a Norwegian official who visited northern Iraq the same year. By that time, Krekar had enjoyed refugee status in Norway for years but had traveled back and forth to Iraq as head of the radical group Ansar al-Islam. He wasn't there, however, when the alleged slaughter occurred. Sidsel Wiborg, a top state official dealing with immigration issues, said the Norwegians were told that Ansar al-Islam members cut the throats of 43 persons at the prison before running away from US troops. Krekar, who's considered a threat to national security because of his ties to Ansar al-Islam, flatly denied Wiborg's claims. His defense attorney, Brynjar Meling, also criticized Wiborg's source of information, which was the security chief for the Patriotic Union of Kurdistan (PUK), an arch rival of Ansar al-Islam. Wiborg said she was told that the Norwegians could "knock on any door" in the neighborhood of the former prison, and ask others what had happened there. Krekar's trial started earlier this month. Government minister Erna Solberg, who issued his deportation order, was expected to testify on Wednesday.