Six people died at a dairy in the central US from an apparent accident involving exposure to gas, authorities said.

The dead are all male and Hispanic, said Jolene Weiner, chief deputy coroner for Weld County in the state of Colorado.

Their identities were being withheld pending notification of the families.

“It looks like an accident,” she said.

She did not provide further details about the emergency’s nature or the specific location of where the bodies were discovered, suggesting that inquiries be directed to occupational safety regulators.

The US Department of Labor’s spokesperson mentioned that the Occupational Safety and Health Administration is conducting an investigation, and more details will be shared once it concludes.

Dairy Farmers of America said a “tragic accident” occurred at a member farm in Keenesburg that resulted in the deaths of six people.

“We are profoundly saddened by this tragic event, and our heartfelt condolences are extended to the families and friends of those who passed. At this preliminary stage, no additional information is available,” stated the cooperative of dairy farmers.

According to county tax documents, Prospect Valley Dairy LLC owns the property, with the owners listed at a Bakersfield, California address. Attempts to reach them via phone at the California address were not immediately answered.