Military forces detained at least five senior Sudanese government figures on Monday, officials said, as the country's main pro-democracy group called on people to take to the streets to counter an apparent military coup.
The Sudanese Professionals' Association, a group leading demands for a transition to democracy, also said there were internet and phone signal outages across the country.
A possible takeover by the military would be a major setback for Sudan, which has grappled with a transition to democracy since long-time autocrat Omar al-Bashir was toppled by mass protests.
Monday's arrests come after weeks of rising tensions between Sudan's civilian and military leaders. A failed coup attempt in September fractured the country along old lines, pitting more-conservative Islamists who want a military government against those who toppled al-Bashir more than two years ago in mass protests. In recent days, both camps have taken to the street in demonstrations.
The arrests of the five government figures were confirmed by two officials who spoke on condition of anonymity because they were not authorized to speak to the media.
The officials said the detained government members include Industry Minister Ibrahim al-Sheikh, Information Minister Hamza Baloul, and Mohammed al-Fiky Suliman, member of the country's ruling transitional body, known as The Sovereign Council, and Faisal Mohammed Saleh, a media adviser to Prime Minister Abdalla Hamdok.
The whereabouts of Hamdok were not immediately clear, amid media reports that security forces were stationed outside his home in Khartoum. Photos circulating online showed men in uniform standing in the dark, allegedly near his home.
Ayman Khalid, governor of the state containing the capital, Khartoum, was also arrested, according to the official Facebook page of his office.
The arrests followed meetings the U.S. special envoy for the Horn of Africa Jeffrey Feltman had with Sudanese military and civilian leaders Saturday and Sunday in efforts to resolve the dispute. Sudan's state news website highlighted the meetings with military officials.
NetBlocks, a group which tracks disruptions across the internet, said it had seen a “significant disruption” to both fixed-line and mobile internet connections across Sudan with multiple providers early Monday.
“Metrics corroborate user reports network disruptions appearing consistent with an internet shutdown,” the advocacy group said. “The disruption is likely to limit the free flow of information online and news coverage of incidents on the ground.”