PRAGUE, Czech Republic (AP) _ Slovak President Rudolf Schuster remained in critical condition Monday after he developed pneumonia in his lungs and suffered problems with blood circulation, his spokesman said.

Jozef Leikert told the Czech news agency CTK that the president's condition dramatically worsened after he developed pneumonia in both lungs. Leikert said Schuster was receiving massive doses of antibiotics.

The Slovak news agency TASR quoted Dr. Milan Majek as Schuster was on a respirator and his life was in jeopardy.

Schuster, 66, underwent an emergency surgery for ruptured colon on June 18, and another five-hour operation after his condition worsened on Friday.

Three doctors from the team of Czech President Vaclav Havel traveled to the Slovak capital of Bratislava for consultations late Sunday with Schuster's doctors, Czech radio said.

Havel suffered similar problems when he underwent an emergency surgery for ruptured colon in April 1998.