The terrorists’ onslaught in Iraq has created "an extremely volatile and dangerous situation for children,"

The terrorists’ onslaught in Iraq has created "an extremely volatile and dangerous situation for children," a top U.N. official warned Tuesday.

There were "disturbing reports" of the recruitment of child soldiers and other "grave violations" against minors in the conflict, said Leila Zerrougui, the U.N. special representative for children and armed conflict.

The terrorist group leading the Iraqi offensive had since 2011 been on the United Nation's black list in particular because of its attacks against schools, Zerrougui noted.

Her comments came as she presented to journalists an annual report on her department's activities. The report details rights violations against children in 23 conflict situations around the world.

It accuses seven national armies and 50 armed groups of using child soldiers -- including Central African Republic, the Democratic Republic of Congo, South Sudan and Syria.