Costa Concordia: Police release underwater footage

Italian police have released footage showing the underwater interior of wrecked cruise ship Costa Concordia.

The Concordia struck a reef off the island of Giglio in January 2012 and capsized, killing 32 people.

Engineers wrenched the ship upright in September 2013, and have been attaching huge tanks to its sides so it can be towed away in the coming weeks.

The police video shows clothing and a book on the decks and the decor and furniture within the ship.