Four workers who were killed in an accident while erecting a steel structure at an industrial site were “asphyxiated”, police said today.
The men died on Friday while constructing foundations for a building at an offshore engineering firm’s base in Great Yarmouth, Norfolk.
Investigators think the structure at the Claxton Engineering site may have collapsed.
Post-mortem examinations showed all four died as a result of “asphyxia due to trauma”, police said.
Detectives and health and safety experts are investigating and a report is being prepared for a coroner.
Police said the inquiry would be “lengthy and complex”.
Two of the four men − named by police as Adam Taylor, 28, Peter Johnson, 41, Tom Hazelton, 26, and Dan Hazelton, 30 − were brothers and all lived near Bury St Edmunds, Suffolk.
Police said Mr Taylor and Dan Hazelton came from Rickinghall and Mr Johnson and Tom Hazelton from Stanton.