For several months leading up to the attack, tensions had been building up in the area, particularly between
Yazidis and
Sunni Muslims (both
Arabs and
Kurds). Some Yazidis living in the area received threatening letters calling them "
infidels". Leaflets were also distributed denouncing Yazidis as "anti-Islamic" and warning them that an attack was imminent. The attack was possibly connected with the
murder of Du'a Khalil Aswad, a 17-year-old Yazidi girl, who was
stoned to death by fellow Yazidis four months earlier. Aswad was believed to have wanted to
convert in order to marry a
Sunni. Two weeks later, after a video of the stoning appeared on the Internet, Sunni gunmen stopped minibuses filled with Yazidis;
23 Yazidi men were forced from a bus and shot dead. The
Sinjar area, which has a mixed population of
Yazidis,
Kurds,
Assyrians,
Turkmen and
Arabs, was scheduled to vote in a
plebiscite on accession to the
Kurdistan Region in December 2007. This caused hostility among the neighbouring Arab communities. A force of 600 Kurdish
Peshmerga was subsequently deployed in the area, and ditches were dug around Yazidi villages to prevent further attacks. == Details ==