Italy hydroelectric plant explosion kills at least three workers

A search is continuing for the missing after parts of the structure collapsed and led to flooding at Enel's power station near Bologna

An explosion at a hydroelectric plant in northern Italy has killed at least three workers and injured five others, a regional fire chief said. At least four other people are missing.

The blast on Tuesday was at power company Enel's decades-old Bergi plant, south of Bologna, and happened during maintenance work, according to authorities. Regional fire chief Francesco Notaro told local media that part of the nine-story underground structure collapsed, started a fire, causing flooding at depths of up to 60 meters (200 feet).