The ICC is also conducting "preliminary examinations" into eight further conflicts, including in Afghanistan, Colombia and Burundi, a spokesperson said.
The ICC's 10 separate, preliminary examinations cover a broader geographical area: Afghanistan, Burundi, Colombia, Gabon, Guinea, Iraq, Nigeria, Palestine, the Gaza flotilla and Ukraine.
Preliminary examinations are used to determine whether the court has the jurisdiction to open a formal investigation.
During preliminary examinations, 1890s architectural details have turned up behind modern walls, like classical pilasters and stained-glass windows with purple, gold and ocher petals.
The abuse allegations came in a wide-ranging annual report into the prosecution office's preliminary examinations, which involve studying reports of possible crimes to establish if they fall under the court's jurisdiction.
Preliminary examinations based on seismographic measurements make it possible to estimate the intensity of shocks and, thus, evaluate the amount of damage caused by a given amount of dynamite.
