Egypt's ruling military council has blamed the Muslim Brotherhood for raising tensions in the country by releasing election results early.

Friday's statement comes as tens of thousands rally in Cairo's Tahrir Square to support the Muslim Brotherhood's candidate for president Mohammed Morsi. The group declared Morsi the winner hours after polls closed.

The military council says announcing the results before an official statement was "unjustified" and is the main reason behind the confusion and divisions plaguing the political situation.