U.N. Secretary General Ban Ki-moon on Tuesday expressed concern about sexual violence used against female protesters in Egypt, where millions have taken to the streets to demand the ouster of President Mohamed Morsi.

"I really hope that while addressing all this current crisis in a peaceful manner, they (Egyptians) should pay more attention to the female demonstrators since we have seen many sexual assault cases over the course of the demonstrations," he told reporters in Reykjavik.
"Until now, I think that the situation has been managed rather peacefully, but unfortunately there have been some casualties, particularly females that have been injured or killed," he added.

U.S. President Barack Obama on Monday also expressed "deep concern" about violence during the demonstrations, especially sexual assaults against women.