Police say they have arrested the father, husband and brother of a woman who was tortured and hanged alongside her alleged boyfriend in a family courtyard in Pakistan.

Local police official Allah Ditta says Khalida Bibi, a married mother-of-three, and her alleged boyfriend, 21-year-old Mohammad Mukhtar, were murdered Thursday in a so-called honor killing in the village of Mian Channu, in eastern Punjab province.

He says the three arrested relatives confessed to killing Bibi and Mukhtar for having an affair.

Ditta gave no further details.

Hundreds of women are murdered every year in Pakistan, often by their own relatives, for going against their families' wishes in matters of love and marriage.