A policeman stands guard at the entrance of Princess Grace hospital in Monaco.
A policeman stands guard at the entrance of Princess Grace hospital in Monaco April 8, 2005 where Prince Ernst August of Hanover, the husband of Princess Caroline of Monaco, has been admitted. Prince Ernst August of Hanover slipped into a coma on Tuesday, a few hours before the tiny Mediterranean state's sovereign ruler Prince Rainier died, palace sources said on Friday. Prince Ernst August of Hanover was admitted to a Monaco hospital with pancreas pains on Monday and has been in a coma since Tuesday evening, the sources said. REUTERS/Eric Gaillard EG/JJ