"Five persons were killed while seven others sustained injuries after a fire broke out following a blast in the ship which was being dismantled in plot number 140 at the yard," Police Sub-Inspector (PSI) K J Rathod of Marine Police Station, Alang said.
Prima facie, the blast occurred due to sudden gas leakage when ship-breaking activity was in progress, the officer said.
The intensity of the blast claimed five lives on the spot while the injured were rushed to the nearest hospitals for treatment, he said.
The cause will be clear only after forensic reports come.