SAN JOSE , Costa Rica -LRB- CNN -RRB- -- Honduras ' interim government on Sunday rejected a proposal to reinstate ousted President Jose Manuel Zelaya , ending a round of negotiations aimed at resolving the country 's political crisis . Jose Manuel Zelaya was ousted from the Honduran presidency on June 28 . The proposal had been presented by Costa Rican President Oscar Arias , who was mediating the talks between the two Honduran sides at his home over the weekend . `` I 'm very sorry , but the proposal you presented -LSB- is -RSB- unacceptable by the government of Honduras that I represent , '' Carlos Lopez , who was representing interim Honduran President Roberto Micheletti at the weekend negotiations , said of the proposal advanced by Arias . Representatives of Zelaya , who was ousted in a June 28 coup , said this marked the end of talks with Honduras ' interim government . The weekend 's talks were the second attempt by Arias to negotiate a resolution . He vowed Sunday to continue his mediation efforts . `` I want to take 72 hours to continue working , even more arduously this time , to see if we can really reach an agreement between the parties in this conflict , '' Arias said . Arias expressed concern that violence could ignite in Honduras if the sides stop talking , and that a civil war could result . Shortly after announcing the end of the negotiations , Lopez indicated in an interview with CNN en Español that Micheletti 's delegation would be open to further talks in the future . At a news conference later Sunday , the head of the Organization of American States said he had been enthusiastic about the proposal advanced by Arias . `` We regret deeply the attitude of Micheletti , '' said OAS Secretary General Jose Miguel Insulza . `` I think -LSB- the proposal -RSB- was a good one . '' The proposal , presented by Arias to both sides on Saturday , would have returned Zelaya to the Honduran presidency . It would also have compelled Zelaya to abandon efforts to modify the country 's presidential term limits . In remarks to reporters before starting Sunday 's talks , representatives of Zelaya said he accepted the seven-point proposal . Micheletti has said he would not accept Zelaya 's return as president , and remarks by Zelaya printed in a Brazilian newspaper contradicted Zelaya 's acceptance of the proposal , Micheletti negotiator Arturo Corrales said . In Sunday 's editions of the Folha newspaper , Zelaya was quoted in support of continuing with his push for a reform to term limits . `` We can not betray the people and abandon the process , '' the paper quoted Zelaya as saying . `` Yesterday they said one thing , and today another , '' Micheletti negotiator Corrales said , adding that Zelaya 's remarks broke the good faith behind the talks . The newspaper , however , noted that Zelaya was interviewed one day before he agreed to Arias ' seven-point proposal . Zelaya was removed from office June 28 in a military-led coup that has drawn international condemnation . Congressional leader Micheletti was sworn in hours later as provisional president . Micheletti and his supporters , including the Honduran supreme court , congress and the military , argue that the action was not a coup , but a constitutional transfer of power . Other steps proposed by Arias included moving up elections scheduled for late November , establishing a national unity government , providing amnesty for all political crimes and setting up an international commission to oversee implementation of the accord . Under Arias ' proposal , oversight of the Honduran military would have switched from the executive branch of government to the Supreme Electoral Tribunal one month before the elections . Delegations representing Zelaya and Micheletti also met at Arias ' home in Costa Rica last week but did not reach an accord . Zelaya , a leftist who took office in 2006 on a narrow victory , had been at odds with Honduran lawmakers , the country 's supreme court and the military over his attempts for a referendum . He sought the referendum , which he planned to hold last month , to see if voters wanted a measure on November 's ballot to establish a constitutional assembly to study whether a president could run for re-election . Under the current charter , a president can serve only one four-year term . Congress had forbidden the referendum and the supreme court ruled it illegal . The military declined to participate in its usual role of safeguarding the vote , saying it could not take part in an illegal act . Zelaya vowed to hold the vote anyway , but was toppled before the voting started .