A 15-year-old girl was apparently stabbed to death on Monday in a suspected honor killing in the Bedouin town of Tel Sheva. The victim’s 24-year-old brother called the police to confess to killing her.

Police rushed to the scene and discovered signs of violence on her body. She was pronounced dead immediately. The brother who called the police was arrested, along with his two male siblings.

Police believe the girl was murdered because she was dating a boy against the wishes of her family, and refused to sever ties with him.

The brothers were cooperating with the investigation, police said.

Nineteen women were murdered by family members in Israel over the past year, representing a 26% decline from the previous year, Women’s International Zionist Organization (WIZO) reported in advance of International Day for the Elimination of Violence against Women, which took place on Sunday.

The number of appeals to the Association of Rape Crisis Centers in Israel rose 16% over the same period.

Among the 19 women killed in the past year, 13 belonged to minority populations: Six were Ethiopian immigrants; four were Arab women; one was an immigrant from the former Soviet Union; one was a foreign worker from the Philippines; and one was an illegal migrant from Eritrea.

According to the WIZO report, approximately 10,600 women requested police protection from violent husbands in 2011. The annual report also indicated that some 89% of cases reported to the rape crisis centers involved women being attacked by men that they knew — 40% by family members, 26% by friends or acquaintances and 14% in places of employment and in the military.

Asher Zeiger contributed to this report.