Sirodjidin Mukhriddin said that of 92 children from Tajikistan stranded in Iraq, 75 should be eligible for repatriation, 31 of whom are aged under three.

Mukhriddin said that in most cases, the children had lost their fathers, who died fighting for the IS and other militant groups.

Iraqi legislation demands that parents consent to their children leaving the country, he said.

Tajikistan will have to pay $400 to repatriate each child, he said, a fee determined after diplomatic negotiations with Iraq.

But Mukhriddin said repatriating the 43 women serving time in Iraqi jails would be an uphill battle.

"Iraqi judges sentenced a number of female citizens of Tajikistan to long sentences, some even to life sentences," he said. The repatriation process "will be long and hard."

Tajik diplomats will be heading to Iraq's neighbour Syria "in the near future" to discuss the issue with government officials including prison authorities, he said.

Russia said Sunday that it had repatriated 27 children whose mothers were held in Iraq for belonging to the Islamic State group. Thirty had already been repatriated in December.

IS seized large swathes of Iraq in a lightning 2014 offensive, before the Iraqi government dislodged the jihadists from urban centres and eventually declared victory in December 2017.

Tajik authorities have said over 1,000 citizens left the country to fight on the side of militant groups in Iraq and Syria after 2011, some after stints working abroad in Russia.

The most famous IS recruit from Tajikistan was Gulmurod Halimov, who headed the interior ministry's special forces unit before sensationally announcing his defection to IS in a video attributed to the group in 2015.