It turns out Ibrahim was re-arrested at the Khartoum airport along with the rest of her family.
About 40 security agents detained Mrs Ibrahim - along with her husband, Daniel Wani and two children - at the airport, the sources said.It appears the National Intelligence and Security Service (NISS) was not happy with the appeal court's decision.
A top Sudanese official has told the BBC she would be freed "soon".
Abdullahi Alzareg from the ministry of foreign affairs told the BBC's Newshour programme that Mrs Ibrahim had been arrested because she did not have the correct travel documents.
Although she is Sudanese, she was using emergency South Sudanese papers with a US visa, he said.
She would be asked to get a passport and exit visa on her release, he added.
The rest here.