Thousand of protesters are demanding the resignations of countries President Omar al-Bashir in capital Khartoum.
Protesters are spending a second night camping outside the Sudan's army headquarters.
The main point of protests is Presidents resignation and transfer of power to transitional government.
The last biggest protest was organized in previous December.
Protests began after government decided to triple the price of bread in December, but it has escalated into growing demands for al-Bashir's leaving after three decades in office.
The Source: Al Jazeera, BBC