Nyarubuye is a district (akarere) of the East Province in Rwanda . Population: 49,565 (2002 figures); area: 439 square kilometers.
In April 1994, many Tutsis sought refuge in a Catholic church in Nyarubuye. Local mayor Sylvestre Gacumbitsi was later found guilty of participating in the attack at the church and convicted of the crime of genocide and crimes against humanity. The ICTR found that between 15 and 17 April 1994, Sylvestre GACUMBITSI directed attacks against Tutsi civilian refugees, who had gathered at the Nyarubuye Parish, and personally took part in the attacks. On 15 April 1994, he killed a Tutsi called Murefu. On 15, 16 and 17 April he directed attacks by giving clear instructions to assailants to attack Tutsi who had sought refuge in the Parish. Among the assailants of 15 April 1994 were the Interahamwe, gendarmes and communal police.
On 7 July 2006, the Appeals Chamber of the ICTR sentenced Gacumbitsi to imprisonment for the remainder of his life.
A Catholic church in Nyange, Kibuye was bulldozed and attacked on 16 April 1994, killing more than 1,500 displaced Tutsis inside, and that parish's priest, Father Athanase Seromba, was convicted of genocide in connection to that crime in 2006 at the ICTR. 
- Districts of Rwanda at statoids.com