CARACAS (Reuters) – the President of Venezuela Hugo Chavez underwent Monday an exploratory operation in the pelvic area, told Reuters a source close to the team doctor of the representative, while maintaining the official silence on his State of health.

Chavez left the operating room on Monday night after 90 minutes of operation, the source said. A columnist for the Brazilian newspaper O Globo also published that surgery was already done.

The health of Chavez, who has been 13 years in power, is a key factor for the political future of the country, which in October will hold general elections where the movement of the President will face an opposition front that has grown in popularity.

Chavez underwent surgery last year and had its removed of the pelvic area a tumor the size of a baseball. Last week announced that he had found a lesion in the same area.

The Socialist leader has been in charge of giving, in dribs and drabs, news about his State of health. But for long periods remained the secret about his illness, which has increased a wave of rumors about his real condition.

(Report of Diego prayed and Marianna Párraga)