Mali coup leaders forge ahead Malian security forces clash with Tuareg supporters in Bamako on February 2. Mali's capital city was largely shuttered Friday Amnesty International says three people died in the coup The Tuareg rebels take advantage of the political chaos Military leaders say they will hold elections Bamako, Mali (CNN) -- Shops and offices remained shut Friday in Mali's capital, Bamako, as the leaders of a military coup began to lay out plans for governance. Amnesty International reported at least three deaths in the seizure of power Thursday by renegade soldiers. Amnesty's director in Mali, Saloum Traore, said the casualties were discovered in the Gabriel Toure hospital; 28 others were injured. Amnesty staff members have not been able to access the other major hospital in Bamako. The coup leaders announced Thursday that they had suspended the constitution and closed Mali's borders. The whereabouts of ousted President Amadou Toumani Toure remained unknown. The military has only said that "he is safe." News of the coup garnered immediate worldwide condemnation. The west African nation of about 15 million people was considered one of the strongest democracies in Africa. Amadou Konare, the spokesman for the renegade soldiers who seized control, accused the government of mishandling an insurgency by Tuareg nomads, who have long called for the creation of an independent state and have risen up against the Malian government a number of times since the 1960s. The indigenous tribe are spread across Mali, Libya, Algeria, Niger and Burkina Faso. The latest uprising began to take root late last year but gained momentum in January, when the rebels began attacking towns in northern Mali. It has been further energized by an influx of fighters who had been fighting on behalf of former Libyan ruler Moammar Gadhafi. The Tuareg took advantage of the chaos in the capital and pushed south to occupy the town of Anefis, previously held by the Malian soldiers, said an online statement from the Azawad National Liberation Movement. The statement said the coup would not affect the Tuareg quest for a separate homeland. Mali's military leaders had declared a nationwide curfew but called on people to return to work Tuesday. They said Mali will hold elections for a new president but did not announce a date. Konare said Mali security forces have formed the National Committee for the Restoration of Democracy and State to work as a transitional government. The United States called for "the immediate restoration of constitutional rule in Mali, including full civilian authority over the armed forces and respect for the country's democratic institutions and traditions. "Our focus and our hope and expectation is that this military action can be quickly reversed, and we can get back to the issue of democratic governance in Mali, which we can all support," U.S. State Department spokeswoman Victoria Nuland said, adding there are discussions but no decisions on whether Washington will suspend any or all of the roughly $140 million in aid that it sends annually to Mali's government. A 1991 military coup led by Toure ended a dictatorship in the landlocked West African nation. Toure became president in 2002, was re-elected in 2007 and was scheduled to step down in April, when elections were set to pick his successor. Jennifer G. Cooke, Africa director of the think tank Center for Strategic and International Studies, said the Mali coup, if ultimately successful, would be a major setback to the nation's political development. "With the region, the international community and very likely the vast majority of Malians in stark opposition, there is no good outcome here, and things are likely to end very badly for the mutineers," Cooke wrote on the center's website. The growing Tuareg insurgency has raised concerns in Washington, which sees Mali as an important ally against al Qaeda in the Islamic Maghreb, the sub-Saharan offshoot of the terrorist group. The ongoing violence between these rebels and security forces has compelled tens of thousands of Malians to flee into neighboring countries and created turmoil in Toure's administration. The U.N. spokesman predicted that the coup would only worsen the security situation in northern Mali and further empower the rebels. CNN's Pierre Meilhan, Kim Chakanetsa and Moni Basu and journalist Diakaridia Dembele contributed to this report.