The killing occurred with the military council and civilian opposition wrangling over final details of a power-sharing agreement ahead of elections after veteran autocrat Omar al-Bashir was toppled in a coup following weeks of mass protests.
The demonstrations were the first since the ruling military council and civilian opposition agreed in principle to a power-sharing arrangement ahead of elections. The deal has yet to be finalised and signed.
The thwarted coup involved a number of retired officers, as well as officers still in service, Jamal Omar Ibrahim, the head of the Transitional Military Council's security committee, said on Sudanese TV.
Although the details are still being finalized, the agreement offers the people in one of Africa’s largest and most strategically important countries the fragile hope of a transition to democracy after 30 years of dictatorship under former President Omar al-Bashir, who was ousted in April.
The principal worry for activists is that the Sudanese military would continue to remain in power, like in neighbouring Egypt where a coup toppled a democratically elected government which had come to power after longstanding dictator Hosni Mubarak’s rule came to an end in 2011.