After the major fire on a Mediterranean ferry off the Greek holiday island of Corfu, the number of confirmed fatalities has risen to five.

After the burnt-out "Euroferry Olympia" was towed to the port of Astakos on Greece's west coast, three more bodies were found on Thursday afternoon, the Greek coast guard said.

Six people were still missing.

The fire broke out on the Italian-flagged ferry on Friday last week when it was traveling from the Greek port of Igoumenitsa to Brindisi in Italy.

Most of the approximately 280 passengers and crew were quickly evacuated, but a dozen truck drivers from Greece, Bulgaria and other countries subsequently went missing.

One of them, a man from Belarus, was discovered unharmed in the area of ​​the stern of the ferry more than two days later and taken to safety.

The body of a 58-year-old truck driver from Greece was recovered on Sunday.

A second fatality was discovered on Wednesday evening and a third on Thursday morning.

The four most recently discovered bodies have not yet been identified.

According to the Greek authorities, however, they are among the missing truck drivers.

All of the fatalities were discovered in the ferry's hold.

The cause of fire is not discovered yet.

The family of the dead Greek truck driver has filed a lawsuit against Italian shipping company Grimaldi, which owns the ferry.