North Carolina state health officials said a deadly Legionnaires' disease outbreak is likely linked to hot tub displayed at a state fair last month.

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The North Carolina Department of Health and Human Services said early test results show that people diagnosed with the disease likely visited the Davis Event Center at the Mountain State Fair in Fletcher last month and walked by the hot tub displays, according to The Associated Press.

Early results from laboratory testing of environmental samples at the fair identified Legionella bacteria in one water sample taken from the event center, the agency said. Results on other samples are not back yet, the AP reported.

The department says 128 cases of Legionnaires' disease and Pontiac fever had been reported as of Wednesday.