Sudanese army rulers and protest leaders Wednesday agreed on a three-year transition period for transferring power to a full civilian administration even as negotiations over a new sovereign ruling body remain unfinished.

Talks between the two sides resumed earlier in the week but were marred by violence when an army major and five protesters were killed by unidentified gunmen at a long-running sit-in outside military headquarters in Khartoum.

The two sides announced early Wednesday that they had reached an agreement on the transition period.

"We agreed on a transitional period of three years," Lieutenant General Yasser al-Atta, a member of the military council told reporters.

Atta said a final agreement on the sharing of power, including the forming of the next ruling body -- the sovereign council -- will be signed with the protest movement, the Alliance for Freedom and Change, within a day.

"We vow to our people that the agreement will be completed fully within 24 hours in a way that it meets the people's aspirations," Atta said.

He said of the three-year transition period, the first six months will be allocated to signing peace accords with rebels in the country's war zones like Darfur, Blue Nile and South Kordofan.

The army generals had initially insisted on a two-year transition period, while the protest leaders wanted four years.

The key negotiations however remain on the composition of the sovereign council, which the generals have insisted to be military led while the protest leaders want it to be majority civilian.

After the forming of the sovereign council, which will replace the existing ruling body made up solely of generals, a new transitional civilian government would be formed to run the country's day-to-day affairs.

That civilian government would work towards having the first post-Bashir elections after the end of the transition period.

Atta said that during the transitional period the parliament will be composed of 300 members, of which 67 per cent will be from the Alliance for Freedom and Change and the rest will be from other political groups.

The Alliance for Freedom and Change meanwhile said the shootings on Monday were an attempt to "disturb the breakthrough" in talks.

On Tuesday, the United States blamed the army itself for the deaths.

They "were clearly the result of the Transitional Military Council trying to impose its will on the protesters by attempting to remove roadblocks", the US embassy said on its Facebook page.

"The decision for security forces to escalate the use of force, including the unnecessary use of tear gas, led directly to the unacceptable violence later in the day that the TMC was unable to control," it said.

Protest leaders, who on Monday had blamed the remnants of Bashir's regime and allied militias, changed their stand on Tuesday.

"We put the whole responsibility on the military council for what happened yesterday because it's their direct responsibility to guard and protect the citizens," Mohamed Naji al-Assam, a prominent figure in the movement, told reporters.

The latest round of talks which opened on Monday come after a break in negotiations that saw protest leaders threaten "escalatory measures" to secure their central demand of civilian rule.

The issue has kept thousands of protesters camped outside army headquarters around the clock ever since Bashir's overthrow.

The sit-in has become the focal point for the protest movement, overtaking the near daily protests that had been held across Sudan while the veteran president remained in power.

But on Tuesday, following the previous night's violence in and around the Khartoum sit-in, protesters vented their anger on the streets of the capital's twin city Omdurman.

Protesters gathered in the Abbassiya and Al-Arbaa districts, just across the Nile from the capital, with many chanting slogans against the military council, witnesses told AFP.

"Protect your homeland or prepare to die!" the protesters chanted.

In Arbaa, some demonstrators blocked roads with burning tyres, a witness said, adding that troops deployed to the area.

Hashim Ali Sayed, a protester at the sit-in, blamed the former regime for the "dirty work" on Monday.

"They are playing the game of dividing the people in order to control the situation.

(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)