Hundreds of protesters arrived on a packed train in Khartoum Tuesday to join a weeks-long sit-in outside army headquarters.
Sudanese protesters vowed to continue their struggle for a civilian government to take over from the military council set up after the army ousted long time president Omar al-Bashir on April 11 following months of mass protests.
The demonstrations first broke out in December in the central Sudanese town of Atbara.
On Tuesday a train from the same town, overflowing with flag-waving demonstrators, chugged through north Khartoum's Bahari railway station before winding its way to the protest site, an AFP photographer said.
Protesters perched on the roof of the train, chanting "freedom, peace, justice" as crowds of supporters, who had waited for hours, greeted them as the procession came to a stop outside the army headquarters in central Khartoum.
Calling for retribution for those killed during Bashir's rule, protesters chanted "blood for blood, we will not accept compensations".
The protests that broke out in Atbara swiftly mushroomed into nationwide demonstrations against Bashir's iron-fisted rule, finally leading to his ouster by the army.
Under Bashir, officials say at least 65 people were killed in protest-related violence in Sudan since December.
But initial jubilation at the end of Bashir's three-decade reign quickly turned to anger over the military council's plan to keep power for a two-year transition period.
World powers have urged the council to cede power to a civilian administration.
But African leaders meeting in Cairo insisted on "the need for more time" for a transition, urging the African Union to extend by three months its end of April deadline for the council to hand power to civilians or face suspension from the bloc, Egypt's presidency said.
A top US official reiterated Washington's backing for demands the country's military council hand power to a civilian government.
"We support the legitimate demand of the people of Sudan for a civilian-led government, and we are here to urge and to encourage parties to work together to advance that agenda as soon as possible," top State Department official Makila James told AFP on Tuesday.
"The people of Sudan have made their demand very clear," she said.
"We want to support them in that as the best path forward to a society that is respectful of human rights, that respects the rule of law and that would be able to address this country's very serious issues."
During her ongoing trip, James met the country's military council chief Lieutenant General Abdel Fattah al-Burhan and several other officials.
James however reiterated that talks with Khartoum over removing Sudan from Washington's list of state sponsors of terrorism remain suspended.
"That is a conversation that we are not able to engage at the moment," she said.
"All of that is suspended as we try to assess what is the reality on the ground, what is the way forward."
Washington has kept Sudan on its state sponsors of terrorism list even as it lifted decades old sanctions in October 2017.
The military council has ordered protesters to remove barricades placed on the roads leading to the protest site.
In an interview with the BBC broadcast on Tuesday, Burhan said force would not be used against the protesters.
"We do not pose any threat against them," he said. “We just want food and petroleum supplies to flow and the movement to become normal."
But protesters vowed to stand their ground at the barricades. Protest leaders from the Alliance of Freedom and Change have suspended talks with the military council, accusing it on Sunday of being part of the regime put in place by Bashir.
Late Monday the military council tried to ease the tensions, saying the demands made by the Alliance for Freedom and Change, the umbrella group leading the protest movement, were being examined.
"The alliance has presented its proposal ... which is now being studied along with the visions of other political forces," council spokesman Shamseddine Kabbashi told reporters.
He said the council "will communicate with everyone to reach a middle ground".
But groups of journalists, doctors, engineers and veterinarians also marched Tuesday in Khartoum to keep up the pressure for a transfer of power to civilian rule.
Hundreds of protesters joined a sit-in outside an army building in the eastern border town of Kassala, demanding that those responsible for killing protesters be brought to justice.