Leftist two-time presidential candidate Andres Manuel Lopez Obrador remains on course for a full recovery from the heart attack he suffered earlier this week, his medical team said.

The hospital's medical director, Dr. Octavio Gonzalez Chon, gave the positive update on Lopez Obrador's condition in a bulletin released Friday.

The former Mexico City mayor, who is currently in the hospital's intermediate care unit, has experienced no complications from the heart attack or the surgery, the bulletin said.

The 60-year-old politician, who ran for the nation's highest office in 2006 and 2012, walked into a Mexico City hospital at 2:30 a.m. Tuesday complaining of chest pain and was found to have suffered an acute myocardial infarction that required the implantation of a stent.

Lopez Obrador, known as AMLO, finished second in the 2006 and 2012 presidential elections.

Conservative Felipe Calderon's margin of victory over Lopez Obrador in 2006 was 0.56 percent, the smallest in Mexican history, and the leftist refused to recognize the result.

AMLO was defeated last year by Enrique Peña Nieto, of the Institutional Revolutionary Party, or PRI.

The current focus of the leftist politician and his National Regeneration Movement, or Morena, is to stop a plan to open the oil sector to private investment, which they see as a step toward privatizing state-owned Petroleos Mexicanos. EFE