Mexico's leftist presidential hopeful has accused President Vicente Fox of attempting to use his office to unfairly influence the country's July second presidential election.
In a letter delivered to the president Monday, Andres Manuel Lopez Obrador accused Mr. Fox of violating election laws by promoting the candidate of the conservative ruling party, the National Action Party's Felipe Calderon.
Earlier Monday, Lopez Obrador's party, the Party of the Democratic Revolution, filed a complaint with federal prosecutors alleging that Mr. Fox has interfered with the campaign to elect his successor.
Lopez Obrador also apologized to the president for calling him a "chachalaca," a notoriously noisy bird. After the verbal attack in March, Lopez Obrador lost his lead in opinion polls and fell to second place.
Monday, Mr. Fox pledged to work for a clean election and said he would not produce any more radio or television ads promoting his administration's accomplishments.
Some information for this report was provided by AP and Reuters.
