Sudan's opposition said security forces raided their offices late Saturday and blocked a press conference ahead of major protests against military rule.
"This represents a violation of liberties that is even worse than the regime of the former president (Bashir)," a spokesperson for the Sudanese Professionals' Association (SPA) said. "This is a bad sign for the atmosphere of mediation between the two parties."
The "million-strong march" is to press the military council to hand power over to civilians.
Talks between the two groups collapsed earlier this month when security forces stormed a protest sit-in in central Khartoum on June 3, killing at least 128 people.
Demonstrators have repeatedly accused the military of trying to make a power grab following the ouster of Omar al-Bashir.
US targets three Iranian oil vessels after attack on Navy ships
Israel launches strikes on southern Lebanon
Indonesia's Anak Krakatau eruption halts flights, schools, fishing
Putin says US-Russia contacts beneficial as talks begin with Witkoff and Kushner
Chinese national rescued from Nepal tunnel 10 days after flash flood
US envoys Witkoff, Kushner arrive in Moscow for talks on peace in Ukraine
One dead, 11 people missing after mudslide in China's Jiangxi province
Philippine VP Duterte posts bail after arrest order for alleged grave threats
