GUATEMALA CITY (AP) — Software company founder John McAfee was hospitalized Thursday after being denied political asylum in Guatemala and his lawyers said they were making a last-ditch effort to keep him from being flown back to Belize for questioning about the killing of a fellow American expatriate.

McAfee told The Associated Press that he suffered chest pains overnight but didn't believe he had a heart attack. A government doctor who examined him agreed, saying that McAfee's heart rhythm and blood pressure were normal and that he appeared to be suffering from high stress.

McAfee was moved from an immigration center to a police-run hospital Thursday afternoon after Guatemalan authorities said McAfee's request for asylum had been denied. They did not explain why. Shortly after the decision was announced, McAfee issued a plea on his blog for the public to petition Guatemalan President Otto Perez Molina to let him stay.