Ali Osman Taha confirmed that he was detained on Thursday
Image copyright Mina Achak Deng/AP Image caption Sudanese Prime Minister Ali Osman Taha is one of a string of party leaders who have been detained
Sudanese authorities have said they are detaining a coalition of opposition parties, including the country’s prime minister, over alleged coup plot.
Leader Taha Ali Mohamed Osman confirmed that he was one of those detained.
Authorities say they have formed a judicial committee to investigate the allegations.
The Sudanese government has been in power since 1983.
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The alleged plot was reportedly discovered last week.
Human rights groups and opposition parties have dismissed it as false.
A court in Khartoum approved the detention orders on Monday.
Mr Osman and a number of ministers from the Sudanese National Congress Party, the National Umma Party and the Sudanese Democratic Alliance were then arrested on Thursday.
The government said an investigation would also look into “actions and activities of leaders and members of opposition parties”.
Image copyright AFP Image caption Police detained hundreds of demonstrators and opposition activists last month
Mr Osman said in a statement: “It is with deep regret that I have to inform you that my detention today began at 9.30 am at the prosecutors’ office at the court of illegal detention and investigation.
“It is true that the normal procedure is to consult the judiciary and I wish to state that I did consult, but such are decisions the judicial committee takes.
“Despite the full support from the judiciary, I feel sorry that I was detained.”
Activists say security forces have also detained at least 15 activists linked to the political opposition for supporting strikes and student protests.
One of the organizers of the strikes and protests, Abulayef Ibrahim, told the BBC that the clampdown had intensified in recent days.
Sudan has been gripped by a wave of strikes and protests since the beginning of April.
After one of the biggest demonstrations in the country’s history, Sudanese police detained over 100 people in Khartoum.
As well as the initial strike call, opposition forces have taken to the streets in a series of sit-ins across the country demanding President Omar al-Bashir step down.
President Bashir, who has been in power since 1989, is wanted for alleged genocide by the International Criminal Court (ICC).