The UIL and CGIL trade unions marched in Bologna on Thursday to demand action on health and safety. This week's explosion at Enel Green Power's Bargi hydroelectric plant on Lake Suviana near the Emilian capital, as the death toll rises to five.

At least 1,500 people took part in the demonstration, marching behind a banner that read "Enough Now" The unions' members are also striking for eight hours in EmiliaRomagna on Thursday, doubling the length of an already-planned nationwide general strike that is especially affecting public transport. The disaster, in which five other people were injured, is the latest in a long series of deadly workplace accidents in Italy. The unions say sub-contract deaths are a major factor in the disaster. The probe into alleged culpable homicide and culpable disaster will look into "procurement and subcontracting", an issue the unionssay is a key factor. The head of the company that owns the plant says "we do notdeserve this kind of statement"