Felipe Calderon (file photo)

Opposition protesters are reported to have caused conservative Mexican President-elect Felipe Calderon to postpone a public appearance in his home state of Michoacan.

Mexican news reports say scores of demonstrators loyal to leftist party leader Andres Manuel Lopez Obrador rallied Friday in the main square of the state capital, Morelia, forcing Mr. Calderon to delay his event.

The president-elect returned to the plaza after the demonstrators were gone to place flowers at the monument of a Mexican independence hero.

Aides to Mr. Calderon say the president-elect's schedule was not changed because of the protesters.

Lopez Obrador lost to Mr. Calderon in Mexico's July 2 presidential election. Lopez Obrador contested the results, claiming vote fraud, but Mexico's top electoral court this week officially declared Mr. Calderon the winner.

Lopez Obrador vowed to continue to lead street protests in Mexico City, where his supporters have been camped out for several weeks following the election. The leftist opposition leader also says he plans to form a parallel government.

Mr. Calderon will take office December 1. He is replacing incumbent president and fellow conservative Vicente Fox.

Mexico's constitution bars presidents from serving more than one six-year term.

Some information for this report was provided by AP and Reuters.