An explosion at an industrial cistern in the Tuscan port of Livorno, one of Italy's biggest passenger and commercial harbours, has killed two people an official said.
The two men had been doing maintenance work on the storage tank when the blast occurred, the port authority official said.
Photographs show a large metal cistern partially crumpled and leaning sideways.
It had contained ethyl acetate, a combustible liquid, according to La Repubblica newspaper's web site.
Commercial and passenger services in Livorno were not likely to be affected, the port authority official said.