A Danish shipyard worker has died three days after being caught in an explosion on a dredger.

Grenaa Shipyard told television station TV2 Ostjylland on Sunday that the 31-year-old passed away following a blast on Thursday morning on the 500-dwt Grete Fighter (built 1980).

Employees and management are deeply concerned over the fatal accident, said chairman Esben Moller.

The man had been flown to hospital in Copenhagen with two colleagues on Thursday.