On June 22, 2015 it was reported that the director-general of Rwanda's National Intelligence and Security Services (NISS), Emmanuel Karenzi Karake, was arrested in London. One report, by Judi Rever in the Digital Journal, refers to Karenzi Karake accurately as "Kagame's spy chief". Paul Kagame, President of Rwanda, rose to power as an intelligence chief himself - working for Yoweri Museveni, the ruler of Uganda, during the 1980s Bush War in that country. Kagame would not choose a spy chief lightly, and Karenzi Karake is absolutely in Kagame's inner circle.
Interpol is responsible for the arrest, and was acting on indictments issued by a Spanish Judge, Fernando Andreu Merelles, in 2008. Merelles issued indictments for forty of Kagame's men, all of whom were in command positions of Kagame's Rwandan Patriotic Front (RPF) at the end of the Rwandan Civil War and genocide of 1994. Having defeated and replaced the Rwandan government that committed the genocide, Kagame's RPF hunted and massacred Rwandan refugees during and after the Rwandan civil war, in the areas they controlled (and in the DR Congo).
The evidence of these massacres is irrefutable. In standard accounts of the genocide, including the basic Human Rights Watch book Leave No One to Tell the Story by Alison Des Forges, massacres by the RPF are presented, though no estimates are given on their scale. A famously buried report by UN investigator Robert Gersony, which has since surfaced, estimated the scale to be in the tens of thousands - during the civil war. Some of the largest, and best documented massacres by the RPF occurred after they had already won the war - the worst and most infamous being the Kibeho massacre of April 1995.