An Iraqi criminal court on Sunday sentenced to death 15 Turkish women after finding them guilty of belonging to the Islamic State group, a judicial official said.

Another Turkish woman accused of membership of the militant group was given a life sentence, the official said, adding they had all acknowledged the charges against them.

Iraq, which has detained at least 560 women, as well as 600 children, identified as militants or relatives of suspected IS fighters, is wasting no time in putting them on trial.

In January, a court sentenced a German woman to death on charges of providing logistical support to IS, and a Turkish woman was earlier this month also handed the death penalty.

Human Rights Watch denounced the rulings as “unfair”.

Earlier this week, a Baghdad court sentenced a French woman, Melina Boughedir, to seven months in jail for entering Iraq illegally but ordered her release on time already served.

Baghdad declared military victory over IS in December, after having expelled the militants from all urban centres they had held in northern and western Iraq since 2014.

According to experts, an estimated 20,000 people are being held in jail in Iraq for alleged membership of IS. There is no official figure.

Separately, authorities in Iraqi Kurdistan said in early February they had detained some 4,000 suspected IS members, including foreigners.

Iraq's anti-terrorism law empowers courts to convict people who are believed to have helped IS even if they are not accused of carrying out attacks.

It also allows for the death penalty to be issued against anyone ─ including non-combatants ─ found guilty of belonging to IS.