Three seafarers have been killed by toxic gas on a Caronte & Tourist ro-pax in Italy.

Another crewman is in a critical condition after the incident on Tuesday on the 11,000-gt Sansovino (built 1989) in the port of Messina.

Local media said a tank was being cleaned by five men at the time.

An investigation has begun into the accident.

Caronte said: "It is with great pain that we learn the news of the death of three workers and the wounding of another seafarer on board the ship Sansovino.

“We