State health officials said the number of cases under investigation involving a dietary supplement for possible ties to hepatitis and liver failure was revised Friday to 29 from 32.

Mark Berthold, a spokesman for the Health Department’s Disease Outbreak Control Division, said he could not provide an explanation for the change.

Fifteen cases came from Oahu, seven from Hawaii County, one from Maui County, one from Kauai County, four are unknown and one is classified as "refused," Berthold said.

The Health Department is requiring stores to stop selling OxyELITE Pro, used for weight loss and muscle-building.

Health officials said there were reports of OxyELITE Pro use in 24 of 29 cases of hepatitis and liver failure including the death of a Maui woman who was taking the pills to lose pregnancy weight.