Several protesters were wounded by gunfire on Monday as Guinean police battled to control violent demonstrations in the capital Conakry against the regime of President Alpha Conde.
Rioting broke out around 9:30 am (local time) in several suburbs including Simbaya and Hamdallaye, and angry protests continued as at least seven youths were treated for gunshot wounds.
The opposition had called for demonstrations across the capital against a lack of stability, which it blames on Conde's government.
The medic, who spoke on condition of anonymity, told AFP two of the protesters sustained leg injuries while a third with a serious stomach wound was dragged several metres by police before being abandoned.
Four other protesters were wounded in the northeastern suburb of Simbaya, witnesses and a police officer told AFP on condition of anonymity.
Opposition parties put the number of injured at 30 and said seven people had been shot, and were in critical condition.
The statement, from the Department of Security and Civil Protection, added that the head of the army had ordered troops to remain in their barracks.
Deadly ethnic tensions
Former prime ministers Cellou Dalein Diallo, Sidya Toure and Lansana Kouyate accused Conde of repeated rights violations and said he had "lost all legitimacy".
They called on supporters to back several demands, including a call to bring forward local elections due in March next year.
"We will continue our rallies tomorrow until we are heard by those in power," Diallo told AFP on Monday.
Guinea, one of the poorest countries in west Africa despite vast potential for mineral exploitation, was run by a succession of autocratic rulers for decades after gaining independence from France in 1958.
A military junta took control in 2008 after the death of president Lansana Conte, who seized power in a coup 24 years earlier.
A caretaker regime oversaw the transition to civilian rule in 2010.
The last election - September 2013's parliamentary vote - was delayed by almost three years, stoking deadly ethnic tensions that have dogged the country's politics since the end of French rule.
Guinea's approximately two dozen ethnic groups - the Fulani are the largest at around 40 percent of the population, followed by the Malinke and Soussou - live in harmony, but political campaigns have a way of exposing fault lines.
President Conde, a Malinke, leads the Rally of the Guinean People and claims to espouse socialism while his main rival, Diallo, is a Fulani and heads the centrist liberal Union of Democratic Forces of Guinea (UDFG).
'Climate of instability'
Large numbers of police had deployed early Monday to the planned locations of the rallies, which were declared illegal.
The government in a statement accused the "so-called republican opposition" of demonstrating "a real desire to create disorder and violence".
It accused protesters of erecting barricades, burning tyres, injuring security personnel, throwing stones at vehicles and firing a shotgun at a police station.
The police responded with tear gas, the statement said.
While acknowledging that some protesters were shot, the government said that "for now, the origin of the gunfire has not been determined".
Amadou Damaro Camara, the chairman of the parliamentary majority group, accused the opposition of trying to create a "climate of instability".
"That is consistent with their desire to bring chaos to all areas," he told AFP.
El Hadj Aliou Bah, a UDFG lawmaker for the Ratoma constituency, called on his supporters to confront the security forces, telling demonstrators: "We really do not have to be afraid of the police."
"Do not provoke anyone. When you are told to stop, stop. But when they attack you, even though you are innocent, you don't just accept it, that much at least is clear," he added.
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