At least five senior government officials have been detained by military forces, according to reports.
The country’s main pro-democracy political group, the Sudanese Professionals Association (SPA), has called on people to take to the streets in response to any apparent coup attempt.
Internet and mobile phone signal outages have been reported, say SPA officials who spoke to the Associated Press (AP) on condition of anonymity.
The arrests come after weeks of rising tensions between Sudan’s civilian and military leaders, including a failed coup attempt in September.
