Costa Rican President Oscar Arias, a former Nobel Peace Prize winner, has agreed to mediate the political crisis in Honduras, interim leader Roberto Micheletti said on national radio Tuesday. Arias 'has accepted to be mediator,' Micheletti said, adding: 'we are open to dialogue. We want to be heard.' The announcement came amid the first signs of a possible way out of the crisis from the leaders who packed President Manuel Zelaya away more than a week ago over a dispute with the courts, politicians and the army over his plans to change the constitution. Zelaya -- whom the army prevented from landing in the capital Tegucigalpa during violent protests on Sunday -- could come back if Congress granted him amnesty, a spokesman for the Supreme Court told selfnews. The ousted president was due to meet Tuesday with US Secretary of State Hillary Clinton in Washington, where a commission from the interim government was also seeking to explain its side of the story. 