Sudan's paramilitary Rapid Support Forces shelled the presidential palace in Khartoum in their second bombardment of the capital in less than a week, an army source said.
The paramilitaries on Thursday fired long-range artillery at the palace from the Al Salha district across the White Nile, their closest position since the army recaptured Khartoum in March, the source told AFP on condition of anonymity.
There were no immediate reports of any casualties from the shelling, which followed a similar bombardment of the army's General Command headquarters in Khartoum on Saturday.
The paramilitaries have been at war with the regular army since April 2023. The conflict has killed tens of thousands of people and uprooted 13 million.

12 others injured in artillery strike on capital of North Darfur, western Sudan.
Since its loss of Khartoum in April, the RSF has focused on consolidating its control of the vast western region of Darfur, where the besieged city of Al Fasher is the last major population centre still in the army's hands.
The RSF said on Thursday it had captured the desert town of El Nuhud in West Kordofan state, a key staging post on the road to Darfur.
Witnesses told AFP that the paramilitaries entered the town in the early morning from the north and west.
In a video shared on Telegram, an RSF spokesman said paramilitaries had "liberated" the town, 400 kilometres east of Al Fasher.
There was no immediate word from the army.
If confirmed, the loss of the town would complicate the army's efforts to relieve its besieged garrison in Al Fasher.
Any relief convoy from central Sudan for the troops and allied militia under RSF attack in Al Fasher would need to pass through El Nuhud.
'Horror knows no bounds.'
The RSF has stepped up its assault on Al Fasher in recent weeks, overrunning two nearby displacement camps and pounding the city with artillery bombardments.
The paramilitaries' advance prompted an exodus of hundreds of thousands of displaced civilians from the camps where they had already endured months of famine.
In the past three weeks, at least 542 civilians have been confirmed killed in North Darfur, the United Nations said on Thursday.
"The horror unfolding in Sudan knows no bounds," UN human rights chief Volker Turk said in a statement.
Further east, RSF drones struck an army base in the southern city of Kosti, a witness told AFP.
The witness reported "loud explosions" as four missiles hit the base in White Nile state, and the army responded with anti-aircraft fire.
The conflict has effectively split Sudan in two, with the army holding the north, east and centre, while the RSF controls nearly all of the west and swathes of the south.