TANZANIAN authorities have arrested Rwandan ex-army officer Bernard Ntuyahaga, accused of killing Rwanda’s prime minister in 1994 and wanted for trial in Belgium on murder charges. Justice Minister Bakari Mwapachu said on Tuesday that Ntuyahaga was arrested in Dar es Salaam on Monday night after being released by the International Criminal Tribunal for Rwanda sitting in Arusha. Ntuyahaga is in Tanzanian police custody. The UN Rwandan war crimes tribunal, set up late in 1994 to judge prime suspects in the genocide of that year, freed him on Monday from detention. Both Rwanda and Belgium are trying to extradite Ntuyahaga.