DAR ES SALAAM, May 26 (AFP) - An extradition case involving a Rwandan ex-army officer accused of killing his country's prime minister and 10 Belgian peacekeepers in 1994 will start on June 15, a Tanzanian magistrate ruled Wednesday. Principal Resident Magistrate Projestus Rugazia said he had chosen the date to allow Jwani Mwaikusa, defence counsel for former major Bernard Ntuyahaga, to get proper instructions and have enough time to go through relevant documents. Mwaikusa, a senior law lecturer at the University of Dar es Salaam, told the court that he understands "enough" French to represent the suspect, who speaks neither English nor Kiswahili, the two languages used in Tanzanian courts. The case was adjourned on May 19, to enable Tanzania's ministry of justice officials to scout for an advocate who was fluent in both English and French. Ntuyahaga, is wanted in Rwanda on charges of killing the then prime minister, Agathe Uwiliyingimana, on April 7, 1994 along with the 10 Belgian soldiers tasked to protect her. He surrendered to the International Criminal Tribunal for Rwanda, which sits in the northern Tanzanian town of Arusha, but it released him in March after accepting an application by the prosecution to drop the charges of genocide and crimes against humanity he was facing in favour of a murder trial in Belgium. He was then arrested by Tanzanian authorities. Tanzania received extradition applications from both Belgium and Rwanda. Belgium wanted Ntuyahaga in Brussels to answer charges of murder of 10 Belgian soldiers, while Rwanda insisted that he should stand trial in Kigali, where the offence was committed. The Tanzania government finally decided to pursue the application filed by Rwanda on the grounds that extradition must be to the country where the alleged crime was committed.  