CORRECTED-UPDATE 10-Sudan paramilitaries clash with army in Khartoum and other cities

(Deletes erroneous reference to second airline in paragraph 25)

By Khalid Abdelaziz and Nafisa Eltahir

KHARTOUM, April 15 (Reuters) - Sudan's main paramilitary group and the regular armed forces exchanged gunfire in Khartoum and elsewhere in the country on Saturday in an apparent struggle for control.

The army rejected assertions by the Rapid Support Forces (RSF) that they had seized the presidential palace, the army chief's residence and airports in Khartoum and the northern city of Merowe.

Sudanese army chief General Abdel Fattah Al-Burhan's comments to Al Jazeera TV followed a live phone interview the station aired with the commander of the RSF, who said his forces had seized the strategic sites.

The situation on the ground was unclear.

The RSF said the army had attacked it first, while the army said it was fighting the RSF at sites the paramilitaries said they had taken.

A major confrontation between the RSF and the army could plunge Sudan into widespread conflict as it struggles with economic breakdown and tribal violence, and could also derail efforts to move towards elections.

The clashes follow rising tensions between the army and the RSF over the RSF's integration into the military. The disagreement has delayed the signing an internationally backed agreement with political parties on a transition to democracy.

Civilian forces that signed a draft version of that agreement in December called on Saturday for an immediate halt to hostilities by both the army and the RSF, to stop Sudan sliding towards "the precipice of total collapse".

"This is a pivotal moment in the history of our country," they said in a statement. "This is a war that no one will win, and that will destroy our country forever."

The RSF accused the army of carrying out a plot by loyalists of former strongman President Omar Hassan al-Bashir - who was ousted in 2019 - and attempting a coup itself.

The RSF is headed by former militia leader General Mohamed Hamdan Dagalo, better known as Hemedti. He has been deputy leader of Sudan's ruling Sovereign Council, headed by army General Abdel Fattah al-Burhan, since 2019.

Doctors said at least three civilians had been killed as fighting extended into residential neighbourhoods in the capital and neighbouring cities.

The army said the Sudanese air force was conducting operations against the RSF. Footage from broadcasters showed a military aircraft in the sky above Khartoum, but Reuters could not independently confirm the material.

Gunfire could be heard in several parts of Khartoum and eyewitnesses reporting shooting in adjoining cities.