Autopsies have found scombroid food poisoning likely caused the deaths of Noelene and Yvana Bischoff in Bali last month.

Their family has been told forensic pathologists, who conducted autopsies on Noelene Bischoff, 54, and her 14-year-old daughter Yvana, had found they died from a combination of food poisoning and existing medical conditions after they ate fish at a Bali restaurant in early January.

Malcolm Bischoff, Noelene’s brother, said it appeared they both suffered from food poisoning that, coupled with their asthma and, in Noelene’s case, migraine medication had formed a fatal cocktail. “We were happy it wasn’t foul play because that would be disgusting,” Mr Bischoff said.

Scombroid food poisoning can result from eating spoiled fish, meaning the restaurant’s preparation could have made no difference, Mr Bischoff said.