John McAfee is back in a Guatemalan immigration detention center, awaiting extradition to Belize, after medical tests showed he did not have a heart attack yesterday, but rather a nervous breakdown, reports CNN. Guatemalan officials turned down McAfee's bid for asylum, but his lawyers have filed a bid with the country's Supreme Court in a last-ditch effort to keep him from being returned to Belize, where he is wanted for questioning in the shooting death of his neighbor. "Due process has been violated. The right to defense has not been respected," said McAfee's lawyer. (More John McAfee stories.)