The United Nations Population Fund says the population of Ukrainians has dropped by 10 million since Russia invaded the country in 2014.
Mr Onakoya had some chess training sessions with the girls at the centre.
She noted that sexual violence in conflicts is a war crime and one that silences voices pleading for peace.
Mr Sabum stated that the other gaps identified were in the areas of protection for women and girls living in IDP camps.
He called on stakeholders to seek an end to the practice.
The Federal Ministry of Women Affairs on Thursday collaborated with stakeholders to enhance menstrual hygiene among women and girls.
According to the World Health Organisation (WHO), Nigeria has the highest number of maternal deaths globally.
Mr Tunji-Ojo said decongesting correctional facilities in the country demands urgent collaboration.
Mr Muhammad said family planning services were available in health facilities across rural and urban settlements.
The stakeholders were trained on the handling and referral of gender-based violence cases to hospitals.
