
The Italian-flagged Euroferry Olympia was carrying an estimated 800 cubic metres of fuel and 23 tons of “corrosive dangerous goods”, the ministry said in a statement.
At least 12 people remain missing from the ferry, which caught fire overnight Thursday to Friday as it was en route from Greece to Italy.
“A possible spill has been noticed” after a fly-over by an aircraft of the coastguard, said the ministry which changed its name to the ministry of ecological transition last year and broadened its purview.
An Italian coastguard ship was already onsite equipped with anti-pollution devices, it added.
The ferry was officially carrying 290 people, the ship’s owner, Grimaldi Lines, has said.
The cause of the fire remains unknown.