The Maldives foreign minister Ahmed Shaheed says he has submitted his resignation.
He is the third top cabinet member to quit this month, and is accusing conservative elements in the government of stalling on democratising reforms.
Mr Shaheed called Reuters newsagency from the capital Male, just before handing his resignation letter to the president.
He told the agency there is a conservative guard within the parliament and cabinet which is resisting the proposals of reformists like him.
He says he thinks the answer is to work outside the system and find a middle ground and provide an alternative.
Source: ABC Radio