LA PAZ , Bolivia ( CNN ) -- An agreement aimed at ending violence and bloodshed that has erupted in Bolivian provinces has been reached between President Evo Morales and provincial governors , officials announced Tuesday . Leopoldo Fernandez Ferreira , governor of Pando province , talks to reporters a day before his arrest . The announcement on Bolivian television came just hours after the military arrested the governor of one of five provinces where violent clashes have occurred in the past three weeks , saying he had committed genocide in the deaths of 30 peasants . Gov . Leopoldo Fernandez Ferreira of Pando province was picked up at his office in Cobija and placed on a military plane for La Paz , the Bolivian capital . He did not resist . Groups in Pando and four other Bolivian provinces , backed by the local governors , have demanded greater autonomy and clashed with supporters of the federal government . Federal authorities say the 30 people who were killed Friday were federal supporters . Bolivian President Evo Morales said the arrest was legal and constitutional . `` This arrest is within the framework of the state where it happened , within the constitutional framework and no one can oppose it , '' Morales said at a news conference at the presidential palace . Officials said more arrests are possible . `` We will work day and night to avoid any more deaths or terrorist acts , '' presidential minister Juan Ramon Quintana said in another news conference . `` We will do everything we can to arrest those who have committed terrorist acts . '' As news of Fernandez 's arrest spread across the country , many citizens talked about who else could be on the government 's `` black list , '' as they were calling it . Besides demanding greater autonomy , opposition leaders in the five provinces want the cancellation of a constitutional referendum that would give the president more power . The opposition also is angry over tax money that Morales is diverting from the provinces to fund programs for the elderly . Learn more about the Republic of Bolivia » . Morales has said the opposition leaders are trying to overthrow the government . `` This is a coup in the past few days by the leaders of some provinces , with the takeover of some institutions , the sacking and robbery of some government institutions and attempts to assault the national police and the armed forces , '' Morales previously said . Opposition leaders say they merely want their demands met . On Tuesday , they warned that Fernandez 's arrest could destroy a shaky truce with the government . The arrest came hours after Morales returned Monday night from a quick trip to Chile , where presidents of the 12-nation Union of South American Countries met to discuss the Bolivian crisis . Watch leaders meet to discuss Bolivia » . Confronting its first crisis , the four-month-old UNASUR voted to create a commission to support Morales ' democratically elected government , said Chile 's president , Michelle Bachelet . She read a nine-point statement on Chilean TV that calls for the support of human rights and democracy and the preservation of Bolivia 's territorial integrity . The statement condemns any attempts to overthrow the government . It also said the new commission will investigate the peasants ' deaths . UNASUR is modeled on the European Union and aims to politically and economically integrate South American countries . On Tuesday , the United States announced it is organizing emergency evacuation flights for Americans in Bolivia and urged them to leave if the situation permits . A statement from the U.S. Embassy in La Paz said U.S. citizens need to sign an agreement to pay later for the cost of the flight . The embassy said some commercial flights are still available , although American Airlines suspended some flights until Sunday . The United States also continued to urge Americans to delay traveling to Bolivia . Morales expelled the U.S. ambassador last week , accusing the American government of inciting the violence . The expelled ambassador , Philip Goldberg , called the charges `` false and baseless '' and said Bolivia was making a `` grave mistake . '' On Monday , the Peace Corps temporarily suspended operations in Bolivia because of `` growing instability '' there . All Peace Corps volunteers in the country have been moved to Peru . `` Our first priority is the safety and security of our volunteers , '' Peace Corps Director Ron Tschetter said in a written statement . Protests started 21 days ago in Pando , Beni , Santa Cruz , Tarija and Chuquisaca provinces . The opposition groups have blockaded major roads and threaten to disrupt the nation 's natural gas shipments , particularly to Brazil and Argentina . Anti-government protesters also have clashed with police and taken over offices and buildings in the five provinces . Much of the violence has taken place in Pando , where Morales declared martial law Friday . Morales , Bolivia 's first indigenous president , was elected in December 2005 .
NEW : Deal aimed at ending weeks of violence . the 12-nation Union of South American Countries military accuses governor of genocide . nine peasants killed ending weeks in clashes in U.S. . U.S. urges its citizens to leave U.S. , announces emergency evacuation flights .