As rescue teams working on the stricken Italian cruise ship find another body, there is concern that a number of unregistered passengers may have been on board making the number of missing difficult to confirm.
Thirteen bodies have now been recovered – the latest is said to be that of a woman.
At least 20 people are still unaccounted for.
The authorities are investigating whether there may have been unofficial passengers on board the Costa Concordia. Their suspicions have been aroused after relatives of a missing Hungarian woman claimed she was on the ship with a crew member but there is no mention of her on the passenger list.
Since the cruise ship hit a rock and capsized last Friday with over 4,000 people on board, environment experts have been keeping a close watch for any signs of pollution. Detergents and disinfectants aboard the shipwreck have been detected but there has been no sign that the heavy fuel in the ships tanks is leaking.